dynamic traffic management
DESCRIPTION
Dynamic Traffic Management. An overview by Frans Middelham. Problems. Congestion Costs are 0.8 M€ per year Accessibility of Main ports Threat to: Distribution function Jobs and Economy Environment Safety. Stronger economy by improving accessibility Enabling traffic & transport growth - PowerPoint PPT PresentationTRANSCRIPT
Dynamic Traffic Management
An overview by Frans Middelham
June 13th, 2006
Dynamic Traffic Management 2
Problems
• Congestion Costs are 0.8 M€ per year• Accessibility of Main ports• Threat to:
– Distribution function– Jobs and Economy– Environment– Safety
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Policy Goals and Objectives
• Stronger economy by improving accessibility
• Enabling traffic & transport growth
• Reliable and predictable door-to-door accessibility
• Innovation is a must• Rapid elimination of
maintenance backlogs• Road pricing necessary
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Traffic Management as a Control Scheme
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Dynamic Traffic Management
• Motorway Signalling• Ramp Metering• Dynamic Route Information• Information Measures• New Developments
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Motorway Signalling Systems since 1981
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Motorway Signalling Systems since 1981
• For:– lane closures near incidents and
road works– queue tail warning and
protection– special lane signalling
• Throughput:– increased with 4-5 %
• Safety assessment (1983):– increased stability of traffic
streams– overall decrease of accidents
with 15-25%– decrease of secondary accidents
with 40-50 %
• Safety assessment (1996):– confirmation of earlier results
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Motorway Signalling Systems since 1981
Until 1993 242,1 km
1994 6,2 km
1995 63,1 km
1996 116,0 km
1997 190,8 km
1998 174,4 km
1999 167,8 km
2000 22,9 km
2001 0,0 km
2002 2,0 km
2003 12,0 km
2004 0,0 km
Total 997,3 km
Planned 61,0 km
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Ramp Metering since 1989
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Ramp Metering since 1989
• For:– alleviate motorway congestion– better merging– discouraging of ‘rat running’
• Several assessment studies:– Increase of speed on
motorways– Major reduction of shockwaves– Capacity increase 0-5%– Substantial reduction of 'rat-
runners'– Less accidents presumable but
not explicitly monitored
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Ramp Metering since 1989
Until 1993 3
1994 3
1995 0
1996 3
1997 4
1998 5
1999 4
2000 9
2001 1
2002 6
2003 0
2004 6
Total 44
Planned 16
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Dynamic Route Information Panels since 1990
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Dynamic Route Information Panels since 1990
• For:– on route information– major incident information and
response
• Several assessment studies:– In 'normal' conditions, 8-10% of
drivers reacts on information– Network performance may
increase with 0-5%– Drivers satisfied, more comfort,
less stress
• Different implementations and tests:
– Queue length– Traveltime– Graphical
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Dynamic Route Information Panels since 1990
Until 1993 4
1994 0
1995 0
1996 6
1997 27
1998 14
1999 4
2000 1
2001 24
2002 0
2003 9
2004 12
Total 101
Planned 22
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Tidal Flow Lane
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Rush-hour Lane (hard shoulder)
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Plus Lane (small left lane, lower speed)
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707070 7070
2m
2m
2m
2m
2.70 3.003.253.00
12.20
Cross-section dynamic left lane (peak hour)
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Plus Lane (small left lane, lower speed)
• Safety considerations (not quantified)
– Less queues– Less shockwaves– Lower speed in rush hours– Better monitoring– Fast incident response
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Truck-, Plus-, Rush-hour and Tidal flow lanes
Until 1993 0 km
1994 16,4 km
1995 0,0 km
1996 5,4 km
1997 7,0 km
1998 10,3 km
1999 13,9 km
2000 0,0 km
2001 0,0 km
2002 11,6 km
2003 7,0 km
2004 23,3 km
Total 94,9 km
Planned 463,0 km
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Incident Management
• Tow away trucks at incident sensitive locations
• Good communication between:– Police– Fire brigade– Ambulance service– Rijkswaterstaat– Salvage companies– Assurance companies
• Video surveillance at incident spots
– 53 installed until 2005– 99 expected(Tunnels, bridges, special lanes not
included herein)
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Monitoring since 1995
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Traffic Management Centers
• 1997 Wijde Blik(Noord-Holland)
• 1998 Geldrop(Zuid Nederland)
• 2001 Oudenrijn(Utrecht)
• 2003 Planken Wambuis(Noord Nederland)
• 2005 Rhoon(Zuid-Holland)
– Surveillance of bridges and tunnels– Surveillance of special lanes– Incident Management– Motorway-signalling– Dynamic Route Information– Dynamic Traffic Management
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Traffic Management Centers
• 2001 Oudenrijn Utrecht– Countrywide Traffic Management
for severe accidents and crossboarder management
• 2001 Oudenrijn Utrecht– Countrywide Traffic Information
Centre– Traffic Information over Radio– Contact with Serviceproviders
(like ANWB)
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Traffic Management Measures
Until 2005 Planned
Motorway Control & Signalling 997 km 61 km
Route Information Panels 101 nr 22 nr
Ramp Metering 44 nr 16 nr
Tidal Flow Lanes 12 km 10 km
Truck Lanes 12 km 0 km
Plus Lanes (small left lanes) 20 km 173 km
Peak Lanes (hard shoulder) 75 km 290 km
No Overtaking Tracks (rush hr) 1557 km 0 km
Incident Detection Camera’s 53 nr 99 nr
Monitoring 1862 km 608 km
Regional TMC 5 nr 0 nr
Countrywide TMC/TIC 1 nr 0 nr
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New Developments and Trials
Graphical displays at Testcentre Delft for road users acceptance and comprehensibility surveys
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New Developments and Trials
• Roadsection Speed Control for pollution prevention and better air quality
– spots vehicles at two cross sections
– measures time travelled over cross section distance and calculates speed
– Speeding drivers get a fine automatically
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New Developments and Trials
• Intelligent Speed Adaption(Trial in Tilburg) for reducing speed in urban areas
• Lane Departure Warning Assistant(Several Trucks Equipped)
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New Developments and Trials
• Dynamic Lane Marking(field tests at A44 running)
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Current State: small scale training
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Contextmodel Traffic Management System
Traffic ControlArchitecture
Architecture of theTechnical Infrastructure
ApplicationArchitecture
Info
rmati
on
Arc
hit
ectu
re
Institu
tion
al
Arc
hite
ctu
re
Framework for an ITS Architecture
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Contextmodel Traffic Management System
Traffic ControlArchitecture
Architecture of theTechnical Infrastructure
ApplicationArchitecture
Info
rmati
on
Arc
hit
ectu
re
Institu
tion
al
Arc
hite
ctu
re
Focus on Traffic Control Architecture
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Traffic Management Architecture
• Goals:– Structured vision on the future of Traffic
Management– Starting point for all other parts of architecture
• Preconditions:– Network wide, not limited by borders between
jurisdictions– Cooperation between road authorities– Coordination and integration of measures– Stable and practical framework for design and
implementation
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Traffic Management Architecture
Means
tactics
scenariosSolutions
Goals
instruments
signals
policy
strategies}
}
}Layered approach
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Traffic Management Architecture
Cyclic process
WHAT ?
HOW ?
WITH WHAT ?
Political objectives Countrywidecontrol tactics
Control strategies
Frames ofreference
Regionalcontrol tactics
Regional
bottlenecks
Regionalservices
ControlScenarios
Regionalmeasures
Countrywideset of
measures
OperationalTraffic
Management
Traffic Conditions
assessment
operations
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12
11
10
9
8
7
6
5
4
3
2
1
operational traffic management
scenarios
realization
decisions
means
services
bottlenecks
current situation
frames of reference
strategies
policies
start
GoalsGoals
DescriptionDescription
Possible solutionsPossible solutions
DecisionDecision
ActionAction
Traffic Management Architecture
12 steps
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Handbook
June 13th, 2006
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Colofon
Ministry of Transport, Public Works andWatermanagementTransport Research Centre (AVV)Frans MiddelhamP.O. box 10313000 BA RotterdamThe NetherlandsTel: +31 10 282 5880Fax: +31 10 282 5644Email: [email protected]: www.rws-avv.nl