Evaluating Alternative Operations Strategies to Improve Travel Time ...

SHRP 2 L11: Final Appendices
Strategy: 2.1. Surveillance and Detection
Category: 2. Information Collection and Dissemination
TREATMENTS AND IMPACTS:
Remote Verification (CCTV)
• Safety: The closed-circuit television (CCTV) camera in Monroe County, New York provided traffic operators visual feedback to
examine real time incident conditions and provide a higher and more responsive quality of service to the traveling public (1).
• Traffic surveillance, lane control signs, Variable Speed Limit (VSL), and Dynamic Message Signs (DMS) in Amsterdam,
Netherlands have led to a 23 percent decline in the crash rate (5).
• Mobility: The Maryland Coordinated Highways Action Response Team (CHART) program is in the process of expanding to more
automated surveillance with lane sensors. A contribution to a 5 percent reduction in non-recurring congestion is reported (3).
The Automated Traffic Surveillance and Control Program in Los Angeles, CA in operation since 1984 has reported an 18 percent
reduction in travel time and 16 percent increase in average travel speed (11).
• Efficiency: B/C Ratio of 5.6:1 for initial operations of the The Maryland CHART program (3).
It was estimated that the CCTV system installed by FDOT D4 ATMS in Fort Lauderdale, FL can reduce incident response time by 13%.
(4)
Driver Qualification
• Safety: According to analyses of NASS (1981-85) and FARS data (1983), 58 percent of heavy-truck drivers involved in accidents
did not receive prior training. For fatal accidents that number is 74 percent (55).
National estimates from NASS data (1981-85) show that 30 percent or more of truck drivers involved in hazardous cargo accidents
had at least one prior speeding conviction in the previous 3 years and at least one additional moving violation. One in every four
accident-involved drivers carrying hazardous cargo had at least one accident prior to the recorded one (55).
Drivers under 25 years of age are six times more likely than other heavy-truck drivers to be involved in an accident (Hackman, et
al., 1978) (55).
Studies indicate that drivers with less than a year of experience constitute 1 percent of the carrier workforce, yet account for 3
percent of the accidents (Jovanis, 1987) (55).
ADDITIONAL DESCRIPTION AND QUANTITATIVE BENEFITS OF TRAVEL-TIME RELIABILITY STRATEGIES Page F-19