Intelligent Transportation Systems (ITS)

1. Intelligent Transportation Systems (ITS) CEE 320Steve Muench

2. Outline • Need for traffic solutions • Possible solutions • Intelligent Transportation Systems

3. Road Use Growth From the Bureau of Transportation Statistics, National Transportation Statistics 2003

4. Changes in Congested Peak-Period Travel

5. Problems Caused by Congestion • Increased… • Travel time • Travel cost • Air pollution • Accident risk

6. Options • Construct new roads • Covered in geometric design • Not likely to happen on a large scale • Reduce Traffic • Travel demand management • Alternative transportation • Increase existing infrastructure capacity • Uses intelligent transportation systems (ITS)

7. Construction Is Part of the Solution

8. Option 1: Construction Highway Construction Cost Sampling General ConclusionHighways cost $1 to $10 million per lane-mile to build

9. San Francisco’s Embarcadero Freeway: Removed 1991

10. Option 2: Alternative Transport But significant new rail capacity will face the same hurdles as new highway capacity.

11. Option 2: Alternative Transport SkyTran: Personal MagLev Transporter

12. Option 3: Increase Existing Infrastructure Capacity • An alternative to expensive new highway construction is the implementation of strategies that promote more efficient utilization of transportation infrastructures. • These strategies are known as the Intelligent Transportation Systems (ITS), which aims to reduce travel time, ease delay and congestion, improve safety, and reduce pollutant emissions

13. How Much Capacity Is There? Full Capacity Highway Capacity

14. How Much Capacity Is There? Remaining Effective Capacity Incidents can comprise 50% of peak period congestion. 1 min delay in clearance = 4 to 5 min of traffic backup. Highway Capacity Incidents: more delay is caused by incidents than by recurring peak period congestion.

15. How Much Capacity Is There? Remaining Effective Capacity Caltrans reports 20% of freeway centerline miles are under construction. Work zones: major cost is delay imparted to the traveler Highway Capacity Incidents: more delay is caused by incidents than by recurring peak period congestion.

16. How Much Capacity Is There? Remaining Effective Capacity 75% of NHS is subject to snow & 100% is subject to rain. Weather: Snow, fog, rain can all restrict capacity Work zones: major cost is delay imparted to the traveler Highway Capacity Incidents: more delay is caused by incidents than by recurring peak period congestion.

17. How Much Capacity Is There? Remaining Effective Capacity Periodic events can cause further restrict capacity. Special events and disasters further restrict capacity Weather: Snow, fog, rain can all restrict capacity Work zones: major cost is delay imparted to the traveler Highway Capacity Incidents: more delay is caused by incidents than by recurring peak period congestion.

18. How Much Capacity Is There? Remaining Effective Capacity Special events and disasters further restrict capacity Weather: Snow, fog, rain can all restrict capacity Work zones: major cost is delay imparted to the traveler Highway Capacity Incidents: more delay is caused by incidents than by recurring peak period congestion.

19. How Much Capacity Is There? ITS Remaining Effective Capacity Highway Capacity

20. Five Primary Functional Areas of ITS • Advanced Traffic Management Systems (ATMS) • Advanced Traveler Information Systems (ATIS) • Commercial Vehicle Operations (CVO) • Advanced Public Transportation Systems (APTS) • Advanced Vehicle Control Systems (AVCS)

21. Advanced Traffic Management Systems Photo from the Human-Computer Interaction Lab: University of Maryland

22. WSDOT Traffic Systems Management Center

23. WSDOT Traffic Systems Management Center

24. WSDOT Traffic Systems Management Center

25. ATMS: Snoqualmie Pass

26. Advanced Traveler Information Systems

27. ATIS: trafficgauge

28. WAP Traffic www.wiresoft.net/traffic/seattle

29. ATIS: Traffic Cameras

30. Commercial Vehicle Operations • Apply, pay for and receive permits, registrations, and licenses electronically • Share of common trucking data across agencies • Exchange information electronically with roadside enforcement personnel • Electronic “screening” of trucks for safety or other regulatory violations • Share information across state lines and with Federal information systems

31. CVO: Weigh-In-Motion System

32. Advanced Public Transportation Systems

33. An Example of APTS http://busview.its.washington.edu/busview_launch.jsp?maps=gif

34. Seattle Bus Monster http://www.busmonster.com

35. APTS: Bus Signal Priority

36. Advanced Vehicle Control Systems Intelligent Cruise Control (ICC) System