By: Pranav Koshiya Committee Member Huaguo Zhou, PhD 1 CE dacq/idotmapdistrict.gif

 Background  Freeway Service Patrol  Emergency Traffic Patrol program (ETP)  Methodology  Data Collection and Assumptions  Anticipated Results 2 CE 491

 Highway congestion costs travelers more than $87 billion, 2.5 billion gallons of fuel and 4 billion hours annually (Urban Mobility Report, 2009)  Two types of congestion Recurring: Congestion during peak periods of travel (commute hours) Non-recurring: Congestion caused due to random events like, flat tires, crashes, disabled vehicles, etc..that cause reduction in freeway capacity  60% of congestion on freeway  Solution Recurring: TDM, TCM, Access Management, ITS Non-recurring: Freeway Service Patrol 3 CE 491

 Fleet of vehicles that rove the freeway  They provide a low tech incident detection, response and removal system  Funding: DOTs fund DOTs contract it out to local agencies Partial funding from DOT and Local Business (CVS Pharmacy) 4 CE 491

 The ETP Mission: Detect and quickly remove the incident from freeway  Consists of total 54 vehicles and covers over 1137 lane miles  Hours of operation and Charge 24 hours, 7 days a week, 365 days a year Free to public Types of TruckTotal Number Supervisor 4x411 Patrol truck39 Heavy duty truck4 5 CE 491

6 Supervisor Truck Heavy Duty Truck Patrol Truck

 One of the oldest FSP program Started in 1961 Total motor assisted from 1961 to 2004: 3,389,655 7 CE 491

Eden’s (I-94) Kennedy (I-90/94) Eisenhower (I-290) Stevenson (I-55) Dan Ryan (I-90/94) I-57 Bishop-Ford (I-90/94) I-80/94 to State line 8 CE US&FORM=BYFD

 Vehicular delay savings  Lesser fuel consumption  Environmental Benefits  Reduction in secondary accidents  Increased security for road users 9 CE 491

 Extensive field data collection Use loop detectors  Freeway Service Patrol Evaluation Version 12.1 (FSPE) Developed by University of California at Berkeley Uses MS-Excel for all inputs and outputs User friendly and convenient to use 10 CE 491

 Inputs Cost of ETP Freeway segment characteristics Traffic Volumes Incidents 11 CE 491

 Depends on Number of patrolling trucks Service hours Coverage miles  Capital, Administrative and Operating  Cost per truck hour is between $22 to $88 12 CE 491

 Beat Design Length (Miles) Number of Lanes AADT – Average Annual Daily Traffic Directional Factors Hourly traffic volumes FreewayAB 13 CE 491

 Divide into three categories Accident Breakdown  Flat tires, Fuel, Jump start, and Minor repairs Debris Incident % Incidents Types/Location Accident Right ShoulderXX % Lt Shldr (Median)XX % 1-LaneXX % Breakdown Right ShoulderXX % Lt Shldr (Median)XX % 1-LaneXX % Debris Right ShoulderXX % Lt Shldr (Median)XX % 1-LaneXX % 14 CE 491

 Default freeway capacity: 2,100 pcphpl  Free flow speed: 55 mph  Response times without ETP: 30 minutes  Average speed of patrolling trucks: 30 mph  Average fuel cost in 2009: $2.32 per gallon (AAA)  Estimated $15.47 per hour of person travel and $ per hour of truck time (Urban Mobility Report, 2009) 15 CE 491

Incident Type Location No. of Freeway Lanes/Direction (REMAINING CAPACITY) Accident Rt. Shldr Median Lane Breakdown Rt. Shldr Median Lane Debris Rt. Shldr Median Lane CE 491

 Annual delay savings: 72,829 veh-hours  Annual fuel savings: 109,857 gallons  B/C Ratio: 20.26:1 17 CE 491

 Annual delay savings (veh-hours)  Annual fuel savings (gallons)  Overall B/C Ratio 18 CE 491

19 CE 491