1. Congestion Causes and Solutions

2. Traffic Congestion Characteristics Slower speeds Longer trip time Increased queues More vehicles

3. Congestion Components

5. Level of Service A: Free flow B: Stable flow C: restricted maneuverability D: Instability E: At capacity F: Stop-and-go

6. Sources of Traffic Congestion

7. Ten Worst Freeway Bottlenecks in US 2002 City Freeway Annual Hours of Delay Los Angeles US 101 / I-405 27,144,000 Houston I-610 / I-10 25,181,000 Chicago I-90 / I-290 25,068,000 Phoenix I-10 / SR-202 22,805,000 Los Angeles I-405 / I-10 22,792,000 Atlanta I-75 / I-85 21,045,000 Washington DC I-495 / I-270 19,429,000 Los Angeles I-10 / I-5 18,606,000 Los Angeles I-405 / I-605 18,606,000 Atlanta I-285 / I-85 17,072,000

8. Travel Time Reliability

9. Solutions to Congestion Adding Capacity Tolling and Pricing Real Time Traveler Information Traffic Management Traffic Signal Timing Travel Rationing Parking Restrictions Public Transport Improvements Policy Approaches to Minimize Travel

10. Traffic Management Incident Management Work Zone Management Weather Management Freeway, Arterial Corridor Management

11. Sources 2007 Mobility Reporthttp://mobility/tamu.eduhttp://mobility/tamu.edu Congestion Definitionhttp://www.fhwa.dot.gov/congestionhttp://www.fhwa.dot.gov/congestion London Congestion Charginghttp://www.tfl.gov.uk/congestioncharginghttp://www.tfl.gov.uk/congestioncharging London Congestion Monitoringhttp://tfl.gov.uk/tfl_monitoring.shtmlhttp://tfl.gov.uk/tfl_monitoring.shtml Arterial Managementhttp://ops.fhwa.dot.gov/arterial_management/indexhttp://ops.fhwa.dot.gov/arterial_management/index FAST-TRAC (Oakland)http://www.rcocweb.org CHART (Maryland) http://www.chart.state.md.us IOP (WSDOT – Seattle)http://www.wsdot.wa.gov/traffic/seattle/ Safety http://www.nhtsa.dot.gov/portal/site/nhtsa/menuitem.6a6eaf83cf719ad24ec86e10dba046a0 http://www.nhtsa.dot.gov/portal/site/nhtsa/menuitem.6a6eaf83cf719ad24ec86e10dba046a0 ARTIMIS (Cincinnati)http://www.artimis.orghttp://www.artimis.org Traffic.com (Philadelphia) http://www.traffic.com/philadelphia-traffic/I-495/(DE)-2.html http://www.traffic.com/philadelphia-traffic/I-495/(DE)-2.html WisconsinTraffic (Wisconsin)http://www.fhwa.dot.gov/trafficinfo/wi.htmhttp://www.fhwa.dot.gov/trafficinfo/wi.htm