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Simulation of Actuated Control Transit Signal Priority Based on Connected Vehicle Technology Shows a Decrease in Intersection Bus Delay of More than 60 Percent.

Methodology Simulation of the selected intersection was used to compare the traffic performance of proposed control strategies under conditions with different CV penetration rates, traffic demand,…
Content type
Date Posted
01/11/2023
Taxonomy (ARC-IT) Transit Signal Priority (PT09)

Installation of Pedestrian Countdown Signals Estimated to Reduce Crashes by 8 Percent, Resulting in an Average Expected Annual Benefit of $12,900.

Methodology Safety Performance Functions (SPF) were developed in combination with the number of crashes at a site in the before period to estimate the number of crashes expected in each year of the…
Content type
Date Posted
05/24/2021

Cost-benefit analysis from 132 red-light camera treatment sites in California, Maryland and North Carolina showed a positive crash reduction benefit of approximately $39,000 per site per year when property-damage-only (PDO) crashes are included and $

This study used a methodology that was noteworthy in two respects. First, the study had an unusually robust crash data sample obtained from 132 RLC treatment sites that spanned seven jurisdictions…
Content type
Date Posted
06/07/2010

Freeway Services Patrols: A State of the Practice

An automated enforcement system in Charlotte, North Carolina reduced red light violations by 75 percent and decreased associated crashes by 9 percent.

RESULTS In the first year of operations red light running accidents at intersections equipped with cameras decreased by nine percent. Overall, violations decreased 75 percent. Charlotte believed the…
Content type
Date Posted
01/01/2000

Beware of the likely trade-off between a decrease in the frequency of right-angle crashes and an increase in the frequency of rear-end crashes when considering installation of red-light-cameras.

Red-light running is a significant safety problem in the United States, resulting in approximately 95,000 crashes and 1,000 fatalities annually. One ITS treatment option is to install red-light…
Content type
Date Posted
05/25/2010