Section 600 Intelligent Transportation Systems 600 Intelligent Transportation Systems Electrical...

Section 600 Intelligent Transportation Systems

Electrical Engineering Centre

April 2013

TABLE OF CONTENTS

600 INTELLIGENT TRANSPORTATION SYSTEMS 601 INTRODUCTION ....................................................................................... 1

601.1 ABOUT SECTION 600 .................................................................. 1 601.2 PLANNING .................................................................................... 1 601.3 DEPLOYMENT .............................................................................. 2

602 DUCTING SYSTEM .................................................................................. 3 602.1 GENERAL...................................................................................... 3 602.2 BACKGROUND ............................................................................. 3 602.3 POLICY.......................................................................................... 3 602.4 DESIGN ......................................................................................... 4

602.4.1 Conduit ........................................................................................4 602.4.2 Vaults and Boxes.........................................................................4 602.4.3 Fibre Cables ................................................................................5

602.5 INSTALLATION ............................................................................. 5 602.6 COMMMISSIONING AND TESTING............................................. 5

602.6.2 Ducting.........................................................................................6 602.6.3 Fibre Cables ................................................................................6

602.7 MAINTENANCE............................................................................. 6 603 DYNAMIC MESSAGE SIGNS................................................................... 7

603.1 GENERAL...................................................................................... 7 603.2 BACKGROUND ............................................................................. 7 603.3 POLICY.......................................................................................... 7 603.4 PLANNING .................................................................................... 8 603.5 DESIGN ......................................................................................... 8 603.6 INSTALLATION ............................................................................. 9 603.7 COMMMISSIONING...................................................................... 9 603.8 MAINTENANCE............................................................................. 9

604 WEB CAMERAS ..................................................................................... 10 604.1 GENERAL.................................................................................... 10 604.2 BACKGROUND ........................................................................... 10 604.3 POLICY........................................................................................ 10 604.4 PLANNING .................................................................................. 11 604.5 DESIGN ....................................................................................... 11 604.6 INSTALLATION ........................................................................... 12 604.7 COMMISSIONING....................................................................... 12 604.8 MAINTENANCE........................................................................... 13

605 CCTV....................................................................................................... 14 605.1 GENERAL.................................................................................... 14 605.2 BACKGROUND ........................................................................... 14

Electrical Engineering Centre 600 INTELLIGENT TRANSPORTATION SYSTEMS April 2013 Electrical & Traffic Engineering Design Guidelines Page i

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605.3 POLICY........................................................................................ 14 605.4 PLANNING .................................................................................. 14 605.5 DESIGN ....................................................................................... 14 605.6 INSTALLATION ........................................................................... 15 605.7 COMMMISSIONING.................................................................... 15 605.8 MAINTENANCE........................................................................... 15

606 VEHICLE DETECTION STATIONS ........................................................ 16 606.1 GENERAL.................................................................................... 16 606.2 BACKGROUND ........................................................................... 16 606.3 POLICY........................................................................................ 16 606.4 PLANNING .................................................................................. 16 606.5 DESIGN ....................................................................................... 17 606.6 INSTALLATION ........................................................................... 17 606.7 COMMMISSIONING.................................................................... 17 606.8 MAINTENANCE........................................................................... 17

607 RAMP METERING .................................................................................. 18 607.1 GENERAL.................................................................................... 18 607.2 BACKGROUND ........................................................................... 18 607.3 POLICY........................................................................................ 18 607.4 PLANNING .................................................................................. 18 607.5 DESIGN ....................................................................................... 18 607.6 INSTALLATION ........................................................................... 19 607.7 COMMMISSIONING.................................................................... 19 607.8 MAINTENANCE........................................................................... 19

608 ADVANCE TRAVELLER INFORMATION SYSTEMS............................ 20 608.1 GENERAL.................................................................................... 20 608.2 BACKGROUND ........................................................................... 20 608.3 POLICY........................................................................................ 20 608.4 PLANNING .................................................................................. 20 608.5 DESIGN ....................................................................................... 20 608.6 INSTALLATION ........................................................................... 21 608.7 COMMMISSIONING.................................................................... 21 608.8 MAINTENANCE........................................................................... 21

609 REVERSIBLE LANE CONTROL SYSTEMS.......................................... 22 609.1 GENERAL.................................................................................... 22 609.2 BACKGROUND ........................................................................... 22 609.3 POLICY........................................................................................ 22 609.4 PLANNING .................................................................................. 22 609.5 DESIGN ....................................................................................... 23 609.6 INSTALLATION ........................................................................... 23

Electrical Engineering Centre 600 INTELLIGENT TRANSPORTATION SYSTEMS April 2013

Electrical & Traffic Engineering Design Guidelines Page ii

TABLE OF CONTENTS

609.7 COMMMISSIONING.................................................................... 23 609.8 MAINTENANCE........................................................................... 23


Electrical & Traffic Engineering Design Guidelines Page iii

601 INTRODUCTION

601.1 ABOUT SECTION 600 .1 Section 600 provides guidelines, information and polices for various

Intelligent Transportation Systems (ITS) elements currently in use or contemplated by the Ministry of Transportation and Infrastructure (Ministry).

.2 The need for improved transportation and commercial vehicle operation and efficiencies are important to the Ministry and ITS can provide cost effective means to this end.

.3 ITS typically involves three main elements: Planning, Design and Deployment.

601.2 PLANNING .1 Planning is critical element to any ITS. ITS should be planned on an area

wide basis, keeping in mind a defined vision and strategic plan. All ITS planning is typically undertaken by the Ministry.

.2 In November 2001 the British Columbia’s Provincial Intelligent Transportation System (ITS) Vision and Strategic Plan was issued. The strategic plan presents a blueprint for the deployment of multi-modal, multi-jurisdictional Intelligent Transportation Systems throughout the Province of British Columbia. This Vision and Strategic Plan is road map followed by the Ministry with respect to ITS planning. A copy of the plan can be obtained by contacting the Manager, Electrical Engineering.

.3 In 2009 Transport Canada developed the Regional ITS Architecture Guidance for Canada: Developing, Using and Maintaining an ITS Architecture For Your Region. This is a guide for transportation professionals who are involved in the development, use, or maintenance of regional ITS architectures. The document describes a process for creating a regional ITS architecture with supporting examples of each architecture product. This document is used by the Ministry in conjunction with their Vision and Strategic Plan. And the TransLink Regional Telecommunications and Infrastructure Plan (RTIP).

.4 Refer to ITS CANADA’s website for additional information: www.itscanada.ca

Electrical Engineering Centre 600 INTELLIGENT TRANSPORTATION SYSTEMS April 2013 Electrical & Traffic Engineering Design Guidelines Page 1

INTRODUCTION

601.3 DEPLOYMENT .1 The deployment is typically undertaken by the consultant or designers as

part of a given project. It typically involves elements such as engineering (preparing plans, specifications and estimates), project management, software selection or design, equipment specification and selection, equipment set-up, testing and commissioning, documentation and training.

.2 Prior to undertaking any project involving ITS elements the designer shall contact the Ministry Electrical Engineering Centre to review and discuss the scope and work to be undertaken.

.3 Though no specific ITS drafting standards exist, all drawings shall follow the drafting standards listed in Section 700. The Ministry have specific information and details which will need to be presented on drawings.


Electrical & Traffic Engineering Design Guidelines Page 2

602 DUCTING SYSTEM

602.1 GENERAL This chapter covers the ducting systems which shall include conduit, manholes, vaults and boxes. Also covered are fibre optic cables and connections.

602.2 BACKGROUND .1 The Ministry of Transportation plans to expand the existing Regional

Telecommunications Network (RTN) as detailed in the Ministry Regional Telecommunications Plan. The RTN is the conduit and fibre-optic backbone that connects together the field devices, and local operations centres to the Regional Transportation Management Centre (RTMC). The various field devices include Intelligent Transportation System technologies such as CCTV cameras, changeable message signs, dynamic message signs, video detection stations, weigh-in-motion systems, etc.

.2 The Ministry currently has part of the RTN built, but needs to complete the missing links. It is most cost effective to design and install conduit as part of an existing road construction project rather than later on its own.

602.3 POLICY .1 Any roadwork that meets all the following criteria must include

communications conduit for ITS purposes.

.1 Any Provincial Numbered Roadway or Provincial Major Road Network, overpass, bridge or tunnel that does not already have communication conduit.

.2 Any project that has an estimated construction cost of greater than $250,000.

.3 Any project within the GVRD limits, including Highway 99 up to Whistler and Highway 1 out to Chilliwack.

.2 This does not include resurfacing and/or line painting only projects.

Electrical Engineering Centre 600 INTELLIGENT TRANSPORTATION SYSTEMS August 2012


DUCTING SYSTEM

602.4 DESIGN

602.4.1 Conduit .1 Where communication ducting is required, 2-50 mm RPVC conduits shall

be provided on the main highway and cross streets. On major urban freeways, 2-100mm RPVC for communications may also be required. Applications where fibre is being installed may warrant 3-32mm SDR11, HDPE inner-ducts colour codes red, blue and orange. The use of inner ducts shall be confirmed with the Ministry Electrical Engineering Centre. 1-50mm RPVC for communication power purposes will also typically required in common trench with the communications conduit.

.2 Conduit road crossings shall be provided where ITS equipment is planned, at strategic locations and any intersections. Conduit road crossings shall include a minimum of 1-50mm for ITS power and 1-50mm for ITS communications.

.3 Conduit, excavation, backfill, etc shall meet all Ministry requirements.

.4 Where conduit crosses bridge and overpass structures it shall be:

.1 RPVC cast into the parapet or,

.2 Galvanized Rigid Metal Conduit (RMC) surface mounted on the structure. Surface mount the conduit and the supports shall be designed by a structural engineer registered with the APEGBC. Fibreglass Reinforced Epoxy (FRE™) may also be considered for surface mount where weight is an issue. In areas where the FRE is being used extra heavy wall FRE shall be considered to reduce the potential for mechanical damage and vandalism. Support spacing shall meet all Canadian Electrical Code requirements.

.3 The conduit shall be designed to accommodate differential soil settlements off the bridge as well as any expansion and contraction on bridge structure.

.4 Conduits shall be designed with expansion fittings to accommodate expansion and contraction of the conduit and bridge structure. The conduit suppliers typically supply information in terms of the conduit expansion and contraction and the bridge design engineer can provide information with respect to the amount and location of expansion and deflection on the bridge structure.

602.4.2 Vaults and Boxes .1 Concrete junction boxes shall be installed in communications and

power conduits systems every 100 m. On major urban freeways



DUCTING SYSTEM

where 2-100mm RPVC for communications are required, vaults maybe required spaced at not greater than 600 m.

.2 All vaults and box lids shall be labelled “COMM”.

.3 Concrete junction boxes shall be Ministry standard type.

.4 Vaults shall be AE Concrete 632 BC Hydro type complete with galvanized steel lid.

.5 Junction boxes on bridge structures shall be avoided however if they are required they shall be a suitably sized aluminum product with a grey powder coat finish and NEMA 3R rating. It is suggested the Valid Manufacturing Ltd CIPS181207 be considered.

602.4.3 Fibre Cables .1 Fibre optic cables come in two basic types, single mode and

multimode: .1 Single Mode fibres have a small glass core, typically around

9μ. Single Mode fibres are used for high speed data transmission over long distances. They are less susceptible to attenuation than multimode fibres.

.2 Multimode fibres have large cores, typically 62.5μ. They are able to carry more data than single mode fibres though they are best for shorter distances because of their higher attenuation levels.

.2 The Ministry typically use a 144 fibre cable for the backbone and a 48 fibre cable for distribution. The number of fibres shall be confirmed with the Manager, Electrical Engineering.

.3 The Ministry have no specific specifications for fibre cables. The designer shall clearly specify the product(s) and all technical and performance specifications.

602.5 INSTALLATION .1 The installation shall be undertaken by qualified contractor as part of the

construction contract. The designer shall define all contractor qualifications and specific experience required.

602.6 COMMMISSIONING AND TESTING .1 Commissioning shall be done by qualified personnel.



DUCTING SYSTEM

.2 Prior to commissioning the design shall provide a complete commissioning check list to the Ministry Electrical Engineering Centre for their review and approval.

602.6.2 Ducting .1 As many ducts may sit empty for year it is critical they are properly

installed. To provide a level of assurance the designer shall verify the ducting is integral and continuous without breaks or damage. To provide a level of assurance it is recommended the designer check pull strings by pulling at both ends. If cable jetting is proposed the contractor should use a cable jetting system to install pull strings under the witness of the designer.

602.6.3 Fibre Cables .1 The designer shall require the contractor provide OTDR testing to

validate the signal strength of fibre cables. The designer shall review and sign-off on all OTDR tests and report the results to the Ministry.

602.7 MAINTENANCE .1 All maintenance shall typically be undertake by Ministry assigned

Maintenance Contractor.

.2 Upon completion of the installation the design shall provide the Ministry Electrical Engineering Centre a PDF copy of Operations and Maintenance information along with any required preventative maintenance for the given technology.



603 DYNAMIC MESSAGE SIGNS

603.1 GENERAL This chapter covers the dynamic message signs.

603.2 BACKGROUND .1 Dynamic Message Signs (DMS) are part of the Ministry’s Traffic

Management System. The purpose of these devices is to display words, numbers or symbols which can be changed on demand to communicate real-time roadway, traffic, or traveller information to road users, as conditions warrant. The advance communication of information to road users allows them to react to conditions in a safe and timely manner. DMS also provide the opportunity to display Public Service Announcements and Public Safety Messages to road users.

.2 The Ministry have network of various dynamic signs including:

.1 Variable Message Signs and Changeable Message Signs - Signs which allow the Ministry Communication Centre to remotely assign pre-defined message onto the sign face.

.2 Hybrid Signs - Changeable Message Signs arranged on a guide sign to read with the static sign message.

.3 Open / Closed Signs - Signs which display open, closed or blank messages and are controlled on site by the operators.

603.3 POLICY .1 Ministry Technical Circular T6/16 Guidelines For The Operation Of

Changeable Message Signs (CMSs) and Portable Changeable Message Signs (PCMSs) provides specific guidelines for the operational use of CMSs and PCMSs used on the British Columbia Highway system. These guidelines ensure that messages displayed shall convey pertinent information to road users, and the design and location of these devices follow procedures that provide correct and consistent field deployments.

.2 Dynamic message signs shall be installed in locations defined and approved by the Ministry Electrical Engineering Center. The Ministry has predefined sign messages for all signs. Any new sign messages must be approved by the Ministry Chief Traffic, Electrical, Highway Safety & Geometric Standards Engineer. Signs shall rest in blank state or with a defined message.



DYNAMIC MESSAGE SIGNS

.3 Typically signs will be controlled via the Ministry Regional Transportation Management Centre (RTMS).

603.4 PLANNING .1 DMS shall be installed in locations defined and approved by the Ministry

Electrical Engineering Centre.

.2 Signs shall be located in areas were power and either telephone/data connection are available. DMS require one of the following communication methods to operate.

.1 Cellular 1X (CDMA) - To determine if Cellular 1X coverage is available in the proposed location, consult the service provider’s coverage map. Visit the site with a digital cell phone or a Cellular 1X modem (preferred) to determine the reception level.

.2 Hardwired Telephone - A hardwired telephone connection is more reliable in areas with intermittent Cellular 1X coverage.

.3 Fibre optic cable.

.3 Each DMS shall be assigned a unique number which shall be obtained the Ministry Electrical Engineering Centre.

603.5 DESIGN .1 The signs shall be designed to meet the requirements of NEMA TS-4

Hardware Requirements for Dynamic Message Signs (DMS) with NTCIP requirements with the following clarifications/exceptions listed in The Ministry Electrical and Signing Material Standards Section 2300 Electronic Message Signs.

.2 Signs shall be installed on cantilever or sign bridge structures which are designed and fabricated in accordance with Ministry Electrical and Signing Material Standards Section 306 Cantilever and Sign Bridge Structures. The sign structure supplier shall also design and fabricate hardware to attach the sign to the structure. Sign bridge and cantilever structures will require engineered foundations and structures. A catwalk to service the sign face will not typically be required as signs will typically serviced from bucket truck.

.3 The sign will typically require a control cabinet and electrical service cabinet with a utility meter. The control cabinet, utility meter and service panel shall be mounted to type 2 - 6.5 m shaft or in the leg of the sign bridge or cantilever structure. The control cabinet shall be a Ministry standard type B cabinet and the service cabinet shall be a Ministry



DYNAMIC MESSAGE SIGNS

standard 100A type. The service equipment and sign controls may also be mounted in a Ministry standard Electrical Kiosk.

.4 All DMS must be detailed on Ministry electrical drawings and submitted to the Ministry Electrical Engineering Centre for approval. The designer shall define all installation details, specifications and information required for a contractor to supply and install the equipment.

.5 The DMS shall be included on the overall system block diagram.

.6 The designer shall design the system for durability and ease of maintenance.



603.7 COMMMISSIONING .1 Commissioning of the VMS signs shall be done by qualified personnel. It

is recommended the equipment be programmed and tested in the shop either by the engineer or the supplier.

.2 Prior to commissioning the designer shall provide a complete commissioning check list to the Ministry Electrical Engineering Centre for their review and approval.






604 WEB CAMERAS

604.1 GENERAL This chapter covers web camera systems which shall including policy, planning, design, installation, commissioning and maintenance.

604.2 BACKGROUND .1 Web cameras are installed throughout the Province providing travellers

with visual images of road conditions via the Internet. The cameras provide still images which are posted on the Ministry of Transportation and Infrastructure website located at http://www.th.gov.bc.ca/bchighwaycam/. Each image is refreshed every 15 minutes for rural roads, and 90 seconds for urban roads.

604.3 POLICY .1 The installation of Web Cameras may be considered where visual road

condition information will be of value to the travelling public. Cameras may also be installed to monitor traffic conditions in areas under construction. The Ministry will consider the installation of web cameras as a component of capital projects where it is determined that the snapshot images of the traffic will provide an ongoing benefit to travelers. The web cameras should be installed as early as practical in the project life cycle so as they can be used to provide traveler information during construction. The sites should be:

.1 On the primary highway network;

.2 At locations that would be familiar to drivers and;

.3 Representative of the driving conditions that one would encounter in that area.

.2 All web camera operating costs and maintenance during construction will be the responsibility of the project. Upon completion of the project, the operating costs and maintenance will be the responsibility of the Ministry Highways District. The cost for relocating temporary cameras after a project is complete will be borne by the Ministry Highways District where they are being permanently installed. The web cameras should be left in place after completion of construction upon which time the Region will need to assume the ongoing maintenance and communication costs, estimated at $1,500/yr (2013 dollars).



WEB CAMERAS

.3 The web cameras must be installed in such a manner that they do not display recognizable personal information, i.e., images of people or license plate numbers.

.4 Highways District. Camera locations must be reviewed with the Ministry Highways District Office prior to design and installation.

604.4 PLANNING

.1 In order for a site to be considered, a suitable power supply and a communications connection must be available as outlined below. Web cameras require one of the following communication methods to operate.

.1 Local Area Network (LAN) - The LAN must be connected to the Internet and be capable of assigning a Static IP address to the camera. Dynamic Host Configuration Protocol (DHCP) can not be used.

.2 Cellular 1X (CDMA) - To determine if Cellular 1X coverage is available in the proposed location, consult the service provider’s coverage map. Visit the site with a digital cell phone or a Cellular 1X modem (preferred) to determine the reception level.

.3 Hardwired Telephone - A hardwired telephone connection is more reliable in areas with intermittent Cellular 1X coverage.

.2 Cameras should be located near established Ministry electrical service panels to reduce costs. Where no existing Ministry service is available but there is power in the area, a new Ministry service will be installed. It is preferred, but not mandatory, that a camera be located in an area where roadway lighting is present so that the lighting enhances the image after daylight hours. When it has been determined that the proposed site meets the criteria outlined above, the web camera location must be reviewed by the Ministry District Office prior to commencing with design.

604.5 DESIGN .1 All web camera installations must be detailed on Ministry electrical

drawings and submitted to the Ministry Electrical Engineering Centre for approval.

.2 The Ministry uses specific technologies and components. The camera components are listed in the attached document. Substituted parts shall be approved by the Electrical Engineering Centre Staff.



WEB CAMERAS

.3 A web camera’s effectiveness, life span and maintenance schedule may be greatly affected by its location. The web camera should be:

.1 Mounted on a structure at a minimum height of 8.0 meters above the road grade.

.2 Located to facilitate the access of the camera by maintenance personnel. Due to limitations in the reach of service vehicles, the maximum camera height shall not exceed 13.5 m in Region 1 and 11.0 m in all other Regions.

.3 Mounted on a structure that is unlikely to be damaged from vehicle impacts. This would include structures located outside the Clear Zone, or behind barrier or curb. Cameras must not be located on structures with frangible or breakaway bases.

.4 Preferably oriented north, northeast or northwest. A camera facing south or east will be adversely affected by sun glare, resulting in the camera becoming ineffective for several hours of the day.

.4 The camera requires a 120V circuit fed from a 15A breaker. The ideal and lowest cost installation is a web camera mounted directly onto an existing service pole with some modification to extend the height of the pole. See the attached drawings which illustrate examples of the web camera mounting options.

604.6 INSTALLATION .1 The Ministry Regional Manager, Electrical Services must be contacted to

arrange the coordination of the installation of web cameras.

604.7 COMMISSIONING .1 Commissioning will be arranged by the Ministry Electrical Engineering

Centre. See Web Camera Schematic drawings for assembly details and testing procedures. The Ministry Representative or the appointed consultant/contractor must:

.1 Assemble the camera, configure the camera, and test for image uploading in the lab prior to delivery to the site.

.2 Assign a username and password for the camera and notify the Ministry Electrical Engineering Centre of the assigned values.

.3 Contact Gord Smith (250-356-8752) to arrange for the Ministry web site to be updated for the new camera.

.4 Test the camera for image uploading on-site after installation.



WEB CAMERAS

604.8 MAINTENANCE .1 Web cameras require a minimum of bi-annual preventative maintenance

which includes cleaning the enclosure window.

.2 Corrective maintenance is required when the web camera fails to upload images to the web site, or the uploaded images are of poor quality due to system component failure or an obstructed camera view.

.3 All maintenance will be coordinated with the Ministry Regional Manager, Electrical Services. Contact Gord Smith (250-356-8752) for issues related to the Ministry web site.



605 CCTV

605.1 GENERAL .1 This chapter covers CCTV camera systems which shall including policy,

planning, design, installation, commissioning and maintenance.

605.2 BACKGROUND .1 The Ministry has Closed-circuit television (CCTV) cameras operating at

various facilities throughout the Province. These cameras encompass are placed on poles and the video images onto video monitors which are used by operators at the Ministry Regional Transportation Management Centre (RTMC) to monitor traffic flow and incidents.

.2 CCTV can be fixed or pan-tilt-zoom which allows the operator to zoom into an area to more closely review and monitor and given incident.

605.3 POLICY .1 The use of CCTV cameras will be defined by the Ministry Electrical

Engineering Centre.

605.4 PLANNING .1 In order for a site to be considered, a suitable power supply and a

communications connection must be available as outlined below. CCTV cameras typically require a fibre optic cables or wireless Ethernet broadband radios or combination of both from the cameras to the control center.

.2 Digital Video Recorders (DVRs) can be installed to record video for research purposes only.

605.5 DESIGN .1 All CCTV system must be detailed on Ministry electrical drawings and

submitted to the Ministry Electrical Engineering Centre for approval. The designer shall define all installation details, specifications and information required for a contractor to supply and install the equipment.



CCTV

.2 The CCTV system shall be included on the overall system block diagram.




605.7 COMMMISSIONING .1 Commissioning of the CCTV system shall be done by qualified personnel.

It is recommended the equipment be programmed and tested shop either by the engineer or the supplier.







606 VEHICLE DETECTION STATIONS

606.1 GENERAL This chapter covers policy, planning, design, installation, commissioning and maintenance for Video Detection Stations (VDS).

606.2 BACKGROUND .1 VDS are specific ITS projects to obtain vehicle count, classification and

speed data and also to detect incidents and traffic congestion. VDS typically used are typically part of a traffic management system or incident detection system along with a CCTV system.

.2 Most vehicle count data is typically obtained via Ministry Short Count Stations or Permanent Count Stations.

606.3 POLICY .1 The Ministry has no specific policy with respect to the use of VDS’s.

Their use will be defined by the Ministry Electrical Engineering Centre on project by project basis. Data collected by VDS's shall be available for display and shall be stores at the RTMC.

606.4 PLANNING .1 Various detection technologies exist which should be considered. They

include:

.1 Inductive detector loops cut in pavement and vehicle detection/classification hardware

.2 Radar detectors mounted on poles

.3 Video detector mounted on poles

.4 Magnetic in-pavement sensors

.2 These technologies should be reviewed on a project by project basis as each will have advantages and disadvantages. These technologies will also be enhanced and refined and new technologies may be developed which are worth considering. Prior to selecting any product or technology the Ministry Electrical Engineering shall be consulted to review and approve the best option(s).



VEHICLE DETECTION STATIONS

.3 The VDS technology selected should be capable of collecting and storing data at the location of the detectors. The data will then be transmitted via fibre optic cables or wireless Ethernet broadband radios or combination of both from the VDS’s to the RTMC.

606.5 DESIGN .1 All VDS must be detailed on Ministry electrical drawings and submitted

to the Ministry Electrical Engineering Centre for approval. The designer shall define all installation details, specifications and information required for a contractor to supply and install the equipment.

.2 The VDS shall be included on the overall system block diagram.


.4 Typical spacing of VDS's is every 500m.



606.7 COMMMISSIONING .1 Commissioning of the VDS stations shall be done by qualified personnel.








607 RAMP METERING

607.1 GENERAL This chapter covers ramp metering which shall including policy, planning, design, installation, commissioning and maintenance.

607.2 BACKGROUND .1 A ramp metering system consists of traffic red and green lights on freeway

on ramps to reduce the flow of vehicles entering the freeway, temporarily storing them on the on ramps. In this way, the traffic flow is better maintained on the freeway however the queue will typically be increased on the on-ramps.

.2 During peak periods vehicle on the on-ramp traffic display red and then in a short period display a short green signal allowing a single car to enter the freeway.

.3 Ramp meters are monitored at the RTMC.

607.3 POLICY .1 The use of ramp metering shall be determined by the Regional Traffic

Engineer.

607.4 PLANNING .1 Ramp metering system shall consist of two section sign heads side

mounted on Ministry standard type 4A shaft on the driver’s right side. The pole shall be placed at the stop bar and the signal head aimed at the driver. The signal shall be controlled via a timer which shall be fully adjustable.

.2 Ramps metering shall operate at defined times of day to suit high traffic volumes.

607.5 DESIGN .1 All ramp metering must be detailed on Ministry electrical drawings and

submitted to the Ministry Electrical Engineering Centre for approval. The



RAMP METERING

designer shall define all installation details, specifications and information required for a contractor to supply and install the equipment.

.2 The ramp metering shall be included on the overall system block diagram.




607.7 COMMMISSIONING .1 Commissioning of the ramp metering stations shall be done by qualified

personnel. It is recommended the equipment be programmed and tested shop either by the engineer or the supplier.







608 ADVANCE TRAVELLER INFORMATION SYSTEMS

608.1 GENERAL This chapter covers Advance Traveller Information Systems (ATIS) which shall including policy, planning, design, installation, commissioning and maintenance.

608.2 BACKGROUND .1 ATIS is a system designed to advise of motorists of potential delays at key

areas such as boarder crossings. The Ministry has a number of ATIS in operation. ATIS typically includes a number of vehicle sensors placed on the approach road to detect vehicle queues. Traffic queues are detected and calculated through software located in a control cabinet. Delays time are posts on dynamic message signs placed in advance so motorists can take alternate routes to avoid delays. The delay information is also post on the Ministry Drive BC web site.

608.3 POLICY .1 The use of ATIS shall be determined by the ITS Engineer and shall be

connected to and monitored by the RTMC.

608.4 PLANNING .1 ATIS shall be installed in locations defined and approved by the Ministry

Electrical Engineering Centre.

608.5 DESIGN .1 All ATIS must be detailed on Ministry electrical drawings and submitted


.2 The ATIS shall be included on the overall system block diagram.



ADVANCE TRAVELLER INFORMATION SYSTEMS




608.7 COMMMISSIONING .1 Commissioning of the ATIS stations shall be done by qualified personnel.

It is recommended the equipment be programmed and shop tested either by the engineer or the supplier.







609 REVERSIBLE LANE CONTROL SYSTEMS

609.1 GENERAL This chapter covers Reversible Lane Control Systems (RLCS) which shall including policy, planning, design, installation, commissioning and maintenance. Refer to Section 409 for further information.

609.2 BACKGROUND .1 A reversible lane (counterflow lane) is a lane in which traffic may travel in

either direction at different time of the day or night. Typically, they are use to improve traffic flow during rush hours, by using overhead traffic lights and lighted street signs notify drivers which lanes are open or closed to driving or turning. Reversible lanes are also commonly found at tunnels and on bridges, where adding additional lanes to handle increased rush hour traffic is often too expensive.

.2 Reversible lanes are considered to be one of the most cost-effective means of increasing roadway capacity under certain conditions. In a reversible lane, the direction of traffic flow is reversed to the opposing direction for some period of time. This takes advantage of the unused capacity of the minor flow direction to increase capacity in the major flow direction, potentially negating or deferring the need to construct additional lanes.

609.3 POLICY .1 The use of RLCS shall be determined by the Regional Traffic Engineer.

609.4 PLANNING .1 The Transportation Association of Canada Guidelines for the Planning,

Design, Operation and Evaluation of Reversible Lane Systems shall be considered. These guidelines offer roadway design practices and suggested warrant guidelines / thresholds, as well as an evaluation of multiple configurations, addressing left turn issues and safety considerations. Systems capacity and evaluation / assessment methods are also included.



LANE USE TRAFFIC CONTROL SIGNALS

609.5 DESIGN .1 All RLCS must be detailed on Ministry electrical drawings and submitted


.2 The RLCS shall be included on the overall system block diagram.




609.7 COMMMISSIONING .1 Commissioning of the RLCS stations shall be done by qualified personnel.








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