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Field Study Shows Routes of Connected Snowplows Had a Larger Reduction in Roadway Crash Rates (up to 3.87) than their Non-Equipped Counterparts (1.82).

METHODOLOGY The study consisted of a field test over the months of October 2019 to March 2020 along five V2X-equipped corridors in the Salt Lake City metropolitan area. Data was collected during and…
Content type
Benefit
Date Posted
05/26/2023
Taxonomy (ARC-IT) Weather Data Collection (WX01)
Geolocation links
Salt Lake City, Utah, United States

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
Benefit
Date Posted
02/28/2023
Taxonomy (ARC-IT) Transit Signal Priority (PT09), Connected Vehicle Traffic Signal System (TM04)
Geolocation links
Salt Lake City, Utah, United States

A Simulation Study Found That Connected and Automated Vehicles Can Improve Lateral Vehicle Movements on Highways with Bottleneck Conditions and Reduce Traffic Conflicts by Approximately 90 Percent in Areas With 60 Percent Market Penetration.

METHODOLOGY A calibrated microsimulation model of I-210 was used to simulate approximately five minutes of traffic flow on the highway. Initially, the simulation was started with free-flowing traffic…
Content type
Benefit
Date Posted
01/31/2023
Taxonomy (ARC-IT) Automated Vehicle Operations (VS16)
Geolocation links
Salt Lake City, Ohio, United States

Simulation Study with Real-world Signal Control Software Found Freight Signal Priority for Connected and Automated Vehicles Has the Potential to Reduce Truck Intersection Delays Between 10 and 70 Percent, with Minimal Impacts on Other Traffic.

METHODOLOGY This project used a communication process which uses latitude/longitude coordinates of CAVs and intersections to define the detection zone and enables information sharing. Once the…
Content type
Benefit
Date Posted
02/23/2022
Taxonomy (ARC-IT) Queue Warning (VS08), Traffic Signal Control (TM03), Integrated Decision Support and Demand Management (TM09), Freight Signal Priority (CVO06)
Geolocation links
Statewide, Wyoming, United States   |   Salt Lake City, Utah, United States

Unmanned Aerial Systems are Recommended for Routine Bridge Inspections, While Hands-On Inspections Should Still Accompany Fractured Critical Members.

Use UAS during routine inspections of large, long, and complex bridges. On such bridges, the reduction in time required for an inspection using a UAS, compared with that needed for a traditional…
Content type
Lesson
Date Posted
01/25/2022
Taxonomy (ARC-IT) Infrastructure Monitoring (MC09), Transportation Infrastructure Protection (PS09), Roadside Lighting (ST04), Connected Vehicle System Monitoring and Management (SU01), Core Authorization (SU02), Map Management (SU04), Location and Time (SU05), Object Registration and Discovery (SU06), ITS Communications (SU07), Security and Credentials Management (SU08), Device Certification and Enrollment (SU09), Center Maintenance (SU10), Field Equipment Maintenance (SU11)
Geolocation links
Glenwood Canyon, Colorado, United States   |   Salt Lake City, Utah, United States   |   Waterville, Maine, United States   |   Winslow, Maine, United States

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
Benefit
Date Posted
09/27/2021
Taxonomy (ARC-IT) Traffic Signal Control (TM03), Connected Vehicle Traffic Signal System (TM04), Transit Signal Priority (PT09)
Geolocation links
Salt Lake City, Utah, United States

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
System Cost
Made Public Date
09/27/2021
Taxonomy (ARC-IT) Traffic Signal Control (TM03), Connected Vehicle Traffic Signal System (TM04), Transit Signal Priority (PT09)
Geolocation links
Salt Lake City, Utah, United States

National Operations Center of Excellence (NOCoE) provides updates on SPaT Challenge activities in recorded Webinar #7.

The following recommendations were discussed: Use industry standards when planning DSRC communication links between intersection signal controllers and roadside units (RSU). Field experience shows…
Content type
Lesson
Date Posted
02/25/2019
Taxonomy (ARC-IT) Traffic Signal Control (TM03), Integrated Decision Support and Demand Management (TM09)
Geolocation links
Las Vegas, Nevada, United States   |   Virginia, United States   |   Salt Lake City, Utah, United States

Augmenting bus rapid transit with GPS-based transit signal priority strategies can reduce transit time by almost 10 percent with minimal non-transit impact.

RESULTS The analysis found that GPS-based TSP strategies can provide transit delay reductions and travel time savings as effective as traditional TSP tools, but with greater flexibility and lower…
Content type
Benefit
Date Posted
02/21/2019
Taxonomy (ARC-IT) Transit Signal Priority (PT09)
Geolocation links
Salt Lake City, Utah, United States
ITS Deployment Evaluation

INTELLIGENT TRANSPORTATION SYSTEMS JOINT PROGRAM OFFICE

1200 New Jersey Avenue, SE
Washington, DC 20590

its.dot.gov

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U.S. Department of Transportation Office of the Assistant Secretary for Research and Technology (OST-R)
 
 
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