A study of the Coordinated Highways Action Response Team in Maryland found that the system reduced incident duration and saved approximately 4.1 million gallons of fuel in 2000.
This study evaluated CHART program performance in 1999 and 2000, and served as a follow-up study to the original CHART program evaluation in 1997. In 1999, CHART collected 34,891 incident reports. This data was compared to the similar categories of information collected on 27,987 incident reports in 2000.
The author noted that an ideal comprehensive evaluation of incident management efficiency should consider detection time, response time, and traffic condition recovery time, however, the results in this study were based on response time with limited data on clearance and recovery times since a real-time surveillance system was not available at the time of the evaluation.
In order to assess the contribution of CHART in terms of reducing incident clearance time, the study computed average incident duration with and without CHART. In 2000, the model estimated a savings of 24.24 million vehicle hours of delay which translated into approximately 4.1 million gallons of fuel.
In 1999, the Maryland DOT provided unit cost estimates of the following pollutants:
- Hydrocarbons at 13.073 grams per hour cost $6,700 per ton.
- Carbon monoxide at 146.831 grams per hour cost $6,360 per ton.
- Nitrogen Oxides at 6.261 grams per hour cost $12,875 per ton.
Based on these costs, CHART saved an estimated 25.7 million dollars in 1999, and 26.7 million dollars in 2000.
CHART Program Performance - 2002
CHART Program Performance - 1997
Evaluation of the Benefits of a Real-Time Incident Response System
Author: Petrov, A., et al.
Published By: Paper presented at the 9th World Congress Conference on ITS. Chicago, Illinois
Source Date: 14-17 October 2002
Average User Rating
Benefit of the Month for April, 2004 !
Typical Deployment Locations
Metropolitan Areas, Statewide
freeway service patrol, courtesy patrols, highway helpers, freeway service patrols