Siemens Traffic Controls Ltd ITSE99/Standards 1 Traffic Management and Control Workshop on Research...
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Transcript of Siemens Traffic Controls Ltd ITSE99/Standards 1 Traffic Management and Control Workshop on Research...
Siemens Traffic Controls Ltd ITSE99/Standards 1
Traffic Management and Control
Workshop on Research and Technological Development for Information Society Technologies Applied to
Transport and Tourism- "Hearing with Interested Actors"
Brussels, Tuesday, 23 May 2000
Richard Bossom
Siemens Traffic Controls Limited
Siemens Traffic Controls Ltd ITSE99/Standards 2
Definition
a definition of “Traffic Management and Control” is:“The process that enables the efficient movement of traffic
using a physical road network.”
depends on the definition of “efficient”: all traffic moves in a way that minimises overall delay traffic carrying the most people gets priority
choosing between the two is a matter of policy
definition takes no account of the needs of pedestrians
Siemens Traffic Controls Ltd ITSE99/Standards 3
Traffic Management Methodologies
Traffic Management usually applied to two road network types:
urban - in cities and towns inter-urban - links cities and towns
Rural Areas will include road networks that are either of these two
Siemens Traffic Controls Ltd ITSE99/Standards 4
Inter-urban Traffic Management provides facilities that are “active” or “passive”
“active” facilities include: lane use management: open/close lanes, change direction speed management: advisory and/or mandatory total closure: usually reserved for severe incidents
“passive” facilities include: journey time information: encourage drivers to use faster
routes routing advice: may cause drivers to use other routes tolling: may cause drivers to use cheaper routes
devices used include: variable text signs, lane indicators
Siemens Traffic Controls Ltd ITSE99/Standards 5
Urban Traffic Management
has been in use for considerable time
both “active” and “passive” facilities available
“active” facilities provide direct control of traffic: junction control: regulates use of road network selective road/lane closure and change of use
“passive” facilities provide driver information: car park occupancy: directs drivers to available spaces diversionary information: advice about other routes
devices used include: traffic signals, fixed message signs, variable text signs
Siemens Traffic Controls Ltd ITSE99/Standards 6
Urban Traffic Management Methodology (1)
available in two types: distributed and centralised
distributed type, e.g. UTOPIA, SCATS employs “intelligent” traffic signal controllers at junctions controllers able to take decisions based on “local” situation some co-ordination between adjacent controllers
centralised type, e.g. SCOOT, TRANSYT employs “dumb” traffic signal controllers at junctions controllers can only do what they are told by central system strong emphasis on co-ordination between adjacent controllers
Siemens Traffic Controls Ltd ITSE99/Standards 7
Urban Traffic Management Methodology (2)
other methodologies being introduced or considered: co-ordinated Public Transport priority controlled access for selected vehicles congestion management (gating) environmental management
incident management now becoming very important: requires accurate detection of possible incident variety of strategies must be available strategies implemented quickly strategies must be adaptable
Siemens Traffic Controls Ltd ITSE99/Standards 8
Future Trends
traffic management and control is a central part of ITS
acts as source of data: traffic and travel information (congestion, journey times) real-time trip planning
links to other systems: other transport modes for co-ordination urban and inter-urban strategy co-ordination Emergency Services incident management co-ordination
Siemens Traffic Controls Ltd ITSE99/Standards 9
Possible Areas of Future Research (1)
targets for future research should include: detection:
> how to get more comprehensive information ?> how can satellites detect traffic conditions ?> causes of incidents (road type, geographic are, etc.) ?
strategy implementation:> effects on other road networks and modes ?> urban and inter-urban interface improvements ?> use decision support systems to aid strategy choice ?
use and impact of VMS:> replace words with pictures ?> effects of particular messages ?
Siemens Traffic Controls Ltd ITSE99/Standards 10
Possible Areas of Future Research (2) targets for future research should include:
improving comm’s infrastructure use:> network sharing ?> Ways to reduce cost of use/ownership ?
also need a demonstration of a commercially based system that provides a revenue stream for the dissemination of traffic and travel information:
combines technologies (Internet, GSM, GPS, WAP) includes such things as floating car data collection extend traffic information to provide full details of diversions
Thank you for listening
Siemens Traffic Controls Ltd ITSE99/Standards 11
Thank you for listening !