Evaluating Alternative Operations Strategies to Improve Travel Time ...

SHRP 2 L11: Final Appendices
A study of a weather and road condition controlled system of VSL signs in Finland showed favorable results for deployment along
heavily traveled road segments. The benefit-to-cost ratios ranged from 1.1:1 to 1.9:1 (5).
• Energy/Environment: Evaluation data show that anti-icing and pre-wetting strategies can reduce sanding applications by 20% to
30%, decrease chemical applications by 10%, and reduce chloride and sediment runoff in local waterways. (1)
Winter maintenance personnel from several agencies indicated that use of RWIS decreases salt usage and anti-icing techniques
limit damage to roadside vegetation, groundwater, and air quality (in areas where abrasives are applied (5).
• Customer Satisfaction: Planned Special Events: 94 percent of travelers surveyed indicated that a road weather information website
made them better prepared to travel; 56 percent agreed the information helped them avoid travel delays in a mountainous area of
Spokane, Washington (1)
80% of motorists surveyed in Idaho who used Road-Weather Integrated Data System information as a traveler information resource
indicated that the information they received made them better prepared for adverse weather (2).
Survey results in Finland indicate that 90 percent of drivers found weather-controlled VSL signs to be useful (5).
Freight Shipper Congestion Information/Commercial Vehicle Operations (CVO)/Border Technology Systems/Smart
Freight/Terminals and Port Gates
• Safety: With 25 % of truck using Commercial Vehicle Information Systems and Networks (CVISN) technology, 25,000 to 38,000
crashes avoided nationally (29).
• Mobility: A modeling study found that an appointment system for scheduling truck arrivals at cargo transfer facilities could reduce
truck's in-terminal time by 48% (1).
Simulation study at the Peace Bridge between U.S. and Canada found that time inspection of trucks equipped with electronic
border crossing system would decrease by 14 to 66 percent (3).
Real-time information systems can reduce travel time and costs by up to 9% based on a simulation model (4).
A simulation analysis in British Columbia, Canada to study travel time savings of e-screening trucks showed savings up to $8.6
million in terms of travel time and up to 4% pavement load reduction (15).
Time savings using CVO/CVISN are estimated to be 3-5 minutes per bypass (28).
In Colorado, an automated commercial vehicle pre-screening system installed at three ports of entry check stations saved
approximately 8,000 vehicle hours of delay per month (2).
• Efficiency: Evaluation data collected from the Freight Information Real-time System for Transport (FIRST) project estimated that
savings per drayage trip to an ocean terminal would range from $21.36 to $247.57 (1).
ADDITIONAL DESCRIPTION AND QUANTITATIVE BENEFITS OF TRAVEL-TIME RELIABILITY STRATEGIES Page F-25