01 CE 122 Intro to Traffic & Highway Engineering

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CE 122 - INTRODUCTION TO

TRAFFIC & HIGHWAY ENGINEERING

Engr. German C. Avengoza, MATPSchool of CE-ENSEMapua Institute of Technology


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Definitions

application of technology and scientific principles to the planning,functional design, operation and management of facilities for anymode of transportation in order to provide for the safe, rapid,comfortable, convenient, economical, and environmentally

compatible movement of people and goods

that phase of transportation engineering which deals with theplanning, geometric design and traffic operations of roads,

streets and highways, their networks, terminals, abuttinglands, and relationships with other modes of transportation

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Source: Institute of Transportation Engineers (ITE) of the U.S

Traffic Engineering

Transportation Engineering


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TransportationModes

Road

Rail

Air

Maritime

Pipeline


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Transportation Modes

Urban People Transportation System movingpeople within urban areas i.e.: car, taxi, jeepney, bus, para-transit, ferry

Inter-city People Transportation Systemmovingpeople from one city/town to another i.e.: car, bus, railroad, air,water

Urban and Inter-Freight Transportation System moving people and goods from one place to another

i.e.: long-haul truck, local truck, air, water, railroad ,pipeline


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Transportation Engineering

Profession

Relationship with General Public

- More than any other engineer.

Relationship with Elected Official

- A wide range of officials

Professional Ethics

- According to outcomes it produces great responsibility


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Primary Goal of Traffic Engineers

The safe and efficient movement of people and goodsthrough our streets and highways

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Improve safety

Relieve traffic congestion

Speed(limited by technology, human characteristics & safety)

Comfort(involves physical characteristics of vehicle and roadway and influencedby perception of safety)

Convenience(relates to more ease with which trips are made and the ability of

transport to accommodate all of travel needs at appropriate time)

Economy (more value to the money)

Protect the environment (e.g. reduce energyconsumption)


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Elements of Traffic Engineering

Traffic Studies -measuring and quantifying variousaspect of highway traffic (traffic volume, speed, travel time,delay, etc)

Performance Evaluation - means by which trafficengineers can rate the operating characteristics of individualsections of facilities, can be measured in terms of level ofservice

Facility Design- involves traffic engineers in the functionaland geometric design of highways and other traffic facilities

Traffic Control -central function of traffic engineers andinvolves the establishment of traffic regulations and theircommunication to the driver through the use of traffic control devices,such as signs, markings, and signals.

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Elements of Traffic Engineering

Traffic Operations - involves measures that influence overalloperation of traffic facilities, such as one-way street systems,transit operations, curb management, and surveillance andnetwork control systems.

Transportation Systems Management - involves virtuallyall aspects of traffic engineering in a focus on optimizing system

capacity and operations. Specific aspects of TSM include high-occupancy vehicle priority systems, car-pooling programs,pricing strategies to manage demand, and similar functions.

Integration of Intelligent transportation SystemTechnologies (ITS) -refers to the application of moderntelecommunications technology to the operation and control of

transportation systems. Such systems include automatedhighways, automated toll-collection systems, vehicle-trackingsystems, in-vehicle GPS and mapping systems, automatedenforcement of traffic lights and speed laws, smart controldevices, and others.

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Mobility vs. Accessibility

Mobility refers to the ability to travel to many differentdestinations, while accessibility refers to the ability togain entry to a particular site or area.

In highway systems, mobility is provided by high type

facilities, such as freeways, expressways, and primary andsecondary arterials. Accessibility is generally provided by localstreet networks. Except for limited-access facilities, whichserve only through vehicles (mobility), most other classes ofhighway serve both functions to some degree.

A good transportation system must provide for both mobilityand accessibility and should be designed to separate thefunctions to the extent possible to ensure both safety andefficiency.


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People & Goods or vehicles?

The most common unit used by the traffic engineer isvehicles.

Highway systems are planned, designed, and operated to

move vehicles safely and efficiently from place to place.Yet the movement of vehicles is not the objective; the goal

is the movement of the people and goods that occupyvehicles.


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Sample Product of Traffic &

Highway Engineering


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Highway Engineering


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Highway Engineering


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Highway Engineering


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Highway Engineering


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Highway Engineering


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Homework 1:

What do you think are the KEY ISSUES toconsider in designing a road or highway?

Submit next meeting, July 27, 2013 (Saturday) in a 1 whole

sheet of Paper (maximum).


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End

01 CE 122 Intro to Traffic & Highway Engineering

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