Evaluating Alternative Operations Strategies to Improve Travel Time ...

SHRP 2 L11: Final Appendices
An access management research project conducted by the Iowa Department of Transportation in seven communities shows that
after implementation of a series of access management techniques, total accidents were reduced by approximately 39 percent and
rear-end and left-turn accidents were reduced by 41 and 42 percent, respectively (37).
A study on New York State Route 27 indicated that access management had the potential to reduce the number of accidents by 53
percent, 77 percent, and 48 percent, respectively, for NY 27 at Unqua Road/westerly Sunrise Mall driveway, Philips Plaza
driveways, and Old Sunrise Highway (38).
• Mobility: Application of access management in HuaiRou County, China increased the average travel speed by 16.3% and reduced
the travel delay by 25.8s (35).
• A research undertaken by the Kentucky Transportation Center estimated that access management could result in a reduction of
delay on the statewide surface street system of 46 million hours per year with the largest delay saving on Urban Class I and II
roadways (36).
• Efficiency: The 2009 Urban Mobility report identified that access management programs in 90 cities in the U.S. was able to reduce
delay by a total of 61 million hours (19).
• Energy/Environment: A study by Ohio-Kentucky-Indiana Regional Council of Governments concluded that 40% of all fuel
consumption in highway transportation was attributable to vehicles stopped and idling at traffic signals (50).
• Customer Satisfaction: A study of the effects of access management conducted in 1996 indicated that close to 80 percent of
businesses reported no customer complaints about access to their businesses after project completion. Over 90 percent of motorists
surveyed had a favorable opinion of improvements made to roadways that involve access management. The vast majority of
motorists thought that the improved roadways were safer and that traffic flow had improved (49).
Strategy: 5.3.Signal Timing/ITS
Category: 5. Infrastructure Improvements and Optimization
TREATMENTS AND IMPACTS:
Transportation Management Center (TMC)
• Safety: A traffic management system in Espanola, New Mexico on NM 68 provided a decrease in total crashes of 27.5 percent and
a reduction in vehicle delay of 87.5 percent (1).
The Camera Deployment and Intelligent Transportation Systems (ITS) Integration project in Monroe County, New York reduced
incident validation times by 50 to 80 percent saving between 5 and 12 minutes per incident (2).
ADDITIONAL DESCRIPTION AND QUANTITATIVE BENEFITS OF TRAVEL-TIME RELIABILITY STRATEGIES Page F-34