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Connected Vehicle Technology Was Deployed on School Buses and at Intersections in Georgia For Approximately $5,000 per Bus and $5,000 per Intersection.

Traffic signal priority (TSP) granted by communications between connected vehicles and the infrastructure has the potential to increase the mobility and efficiency of designated vehicles. Connected…
Content type
Made Public Date
11/17/2023
Taxonomy (ARC-IT) Transit Signal Priority (PT09)

Signal Priority Tested on Connected School Buses in Fulton County Resulted in a 40.4 Percent Decrease in Number of Stops and 13.3 Percent Reduction in Travel Time.

METHODOLOGY The study collected data in 2022 for a month prior to deployment of the technology, and then another month while the CV technology was implemented. Data for the analysis was collected…
Content type
Date Posted
11/17/2023
Taxonomy (ARC-IT) Transit Signal Priority (PT09)

Simulation Study Implementing Transit Signal Priority on a Major Transit Corridor with Two Transit Lines on a Bus Only Lane in San Francisco Reduced Total Travel Time up to Nine Percent and Control Delay by 20 Percent.

METHODOLOGY The following three strategies were tested:  Strategy 1, Arterial timing optimization without private vehicles; Strategy 2 - Transit signal priority (TSP) at signalized…
Content type
Date Posted
06/28/2023
Taxonomy (ARC-IT) Transit Signal Priority (PT09)

Transit Signal Priority (TSP) Communications Logged Between Buses and Signal Controllers Improved Planning for Signal Retiming Efforts at 30 Signalized Intersections in Salt Lake County, Utah Which Improved Bus Run-Time Reliability Up to 2.7 Percent.

METHODOLOGY For this CV-based TSP application, DSRC radios from four vendors were installed at 30 intersections and on several buses for communication between vehicles and roadside infrastructure.…
Content type
Date Posted
02/28/2023

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)

Case Study Showed Transit Signal Priority Improved Bus System On-Time Performance, Schedule Deviation, and Travel Time as Bus Priority Request Lead Times Approached Zero.

METHODOLOGY Bus performance in this study was evaluated based on (i) on-time performance (OTP), (ii) schedule deviation, (iii) travel time, and (iv) dwell time; and the general traffic analysis was…
Content type
Date Posted
02/24/2022
Taxonomy (ARC-IT) Transit Signal Priority (PT09)

Connected Vehicle Applications Focused on Signalized Intersection Safety Have Estimated Median Benefit-Cost Ratio of 3.38.

Return on Investment Analysis The benefits and costs of CV applications were calculated for the selected road segment and used in the stochastic ROI analysis. The benefits utilized estimated crash…
Content type
Date Posted
09/27/2021

Utah DOT Deployed a Dedicated Short-Range Communications Corridor Supporting Transit Signal Priority Controls For a Total Cost of $575,900.

Utah DOT developed a project based on the initial 2016 deployment of a full Dedicated Short-Range Communications (DSRC) corridor that supported transit signal priority (TSP) controls to leverage…
Content type
Made Public Date
09/27/2021

Utah DOT Assessment of Adaptive Traffic Signal Control in a Connected and Automated Vehicle (CAV) Environment Estimates A Benefit Cost Ratio of 14.24 at Just 25 Percent Market Penetration.

Methodology Related bus data from UDOT and Utah Transit Authority (UTA) for the deployment site was first collected to conduct the B/C analysis. Travel time savings served as the main metric used to…
Content type
Date Posted
09/27/2021

Simulation Analysis of a Congested Corridor Finds 6 Percent Reduction in Travel Time Costs through a Combination of Freight and Transit Signal Priority.

Methodology The goal of the project was to assess various strategies to provide FSP and TSP without deteriorating the traffic conditions of the overall network. The effectiveness of the strategies…
Content type
Date Posted
02/24/2021