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Inter-Urban ITS

Inter-Urban ITS. John Paddington, Consultant, Faber Maunsell. Nottingham University, 24 th November 2005. Lecture Content. Why use ITS? M25 Controlled Motorway Active Traffic Management (ATM) on the M42 NASS Decision making tool for ATM. Inter Urban Network: Context.

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Inter-Urban ITS

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  1. Inter-Urban ITS John Paddington, Consultant, Faber Maunsell Nottingham University, 24th November 2005

  2. Lecture Content • Why use ITS? • M25 Controlled Motorway • Active Traffic Management (ATM) on the M42 • NASS Decision making tool for ATM

  3. Inter Urban Network: Context • Focus on the road network • Already near capacity • Building more roads is not the answer • Environmentally damaging • Politically sensitive issue

  4. What is ITS? A recap • ITS stands for Intelligent Transport Systems • Essentially modern technology used in conjunction with transport schemes. • Using existing infrastructure “better” Image

  5. M25 Controlled Motorway Variable Speed Limits

  6. MIDAS Fore-runner of Controlled Motorway Image

  7. Why Variable Speed Limits? Some theory… • Lower traffic speeds when the road is busy to reduce congestion • Aim to improve efficiency of the road • Reduce “stop / start” traffic • More consistent journey times • Reduce variability

  8. What is Controlled Motorway? The System • Development of MIDAS • Mandatory Variable Speed Limits • (60, 50 ,40 mph limits) • Speed Enforcement • Initially wet film cameras • Now Digital Gatsos

  9. M25 Controlled Motorway: M25 CM Picture

  10. Controlled Motorway Faber Maunsell Involvement in the Project • Parties involved: • Highways Agency • TRL • Mouchel Parkman • Faber Maunsell have been involved since 1999!

  11. Controlled Motorway Scheme Assessment(1) • Business Case Development • Assess benefits: • Journey Time • Accident Savings • Fuel Saving • Assess costs: • Installation, Renewal and Maintenance

  12. Controlled Motorway Scheme Assessment(2): WEBTAG • Government Approach: (WEBTAG) • Assess wide range of benefits and disbenefits in the following categories: • Environment  • Safety • Economy • Accessibility • Integration • Produce a comparison table called an Appraisal Summary Table (AST) • See: www.webtag.org.uk for details

  13. Controlled Motorway Scheme Assessment(3): Appraisal Summary Table AST

  14. Active Traffic Management (ATM) Controlled Motorway 2?

  15. Active Traffic Management The latest scheme • M42 Junctions 3a- 7: Birmingham • Multi-Million pound project • Uses the latest technology • First phase going live imminently M42 J3a-7

  16. Active Traffic Management Not just Controlled Motorway… • Access Control • CCTV Based Incident Detection • Emergency Refuge Areas • Hard Shoulder Management • HADECS Digital Speed Enforcement • MS4 Variable Message Signs capable of displaying pictograms

  17. Active Traffic Management The reality ATM Picture

  18. Active Traffic Management Timetable • Installation works now complete • Three Lane Variable Speed Limits from Late 2005 • Four Lane Hard Shoulder Running from Autumn 2006 • Access Control: still to be determined

  19. Active Traffic Management Education Advert in Birmingham METRO: Monday 21st November 2005 ATM Website: www.highways.gov.uk/atm

  20. Network ATM Supervisory Subsystem (NASS) A traffic management tool for ATM

  21. What is NASS? Summary • Computer modelling tool developed by IPL • Will be used by ATM Operators in the Control Room • Predicts traffic conditions an hour ahead • Match conditions to a library of traffic patterns • Decide which one of three associated plans will have the most benefit

  22. What is NASS? A screenshot… Image

  23. What is NASS? Faber Maunsell involvement • Working for WSP in Basingstoke • Ultimate client is the Highways Agency • Testing Phase B of the system • “Offline” testing • Phase C will be installed in the Control Room

  24. What is NASS? TRL SISTM Simulator • Used to simulate road conditions • “Graphical” modelling tool • Each “dot” is a car! • Colours show speed of each car Image

  25. NASS Testing Process • System run for six hour period • From “6 am” to “12 am” • Takes six hours for each run! • Assess Flows, Speed and Journey times across the network • Only two of thirty runs complete so far

  26. NASS Results An example…

  27. Any Questions…

  28. And as a reminder… We will be holding an informal session in Room B36 from 13:00 to 14:30 Anyone is welcome to “drop in” and to talk to any one of us.

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