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Simulation Study Estimates That a Fleet of Connected Vehicles Would Improve Safety Benefits from Weather-Responsive Traffic Management by 20 Percent in Severe Weather, As Measured by Inverse Time-to-Collision.

Methodology Three weather-responsive management strategies (WRMS) for I-80 in Wyoming were evaluated using a framework consisting of a simulation platform network module, a simulation manager…
Content type
Benefit
Date Posted
02/18/2022
Taxonomy (ARC-IT) Roadway Automated Treatment (MC03), Personalized Traveler Information (TI02), Weather Information Processing and Distribution (WX02), Spot Weather Impact Warning (WX03), Winter Maintenance (MC04), Variable Speed Limits (TM20)
Geolocation links
Wyoming, United States   |   Chicago, Illinois, United States

Standardize Mobile Weather Sensor Data For Use Under Future Connected Vehicle-Enabled Weather Responsive Traffic Management Systems.

The following summarizes the lessons learned from the pilot implementation in Washington State and Delaware and the WRTM stakeholder meeting that took place in Raleigh, NC in 2017. Plan for a…
Content type
Lesson
Date Posted
01/27/2022
Taxonomy (ARC-IT) Roadway Automated Treatment (MC03), Traffic Information Dissemination (TM06), Winter Maintenance (MC04), Weather Information Processing and Distribution (WX02)
Geolocation links
Washington, United States   |   Delaware, United States

Crashes during Snow Events Declined 42 Percent after Winter Season Variable Speed Limit Corridor Implementation in Ohio.

Methodology ODOT conducted an analysis of winter season crash and incident data from before the VSL deployment (2014-2016) compared with the first two winter seasons after deployment (2017-…
Content type
Benefit
Date Posted
06/21/2021
Taxonomy (ARC-IT) Roadway Automated Treatment (MC03), Traffic Information Dissemination (TM06), Weather Information Processing and Distribution (WX02), Spot Weather Impact Warning (WX03), Variable Speed Limits (TM20)
Geolocation links
Lake County, Ohio, United States

Minnesota DOT Uses Connected Arrow Boards to Improve Traveler Information and Lane Closure Information Accuracy at an Estimated Annual Cost of $16,560.

Starting in April 2018, Minnesota DOT (MnDOT) tested the integration of lane closure messages from 20 connected arrow boards with the agency's existing Advanced Traffic Management System (ATMS)…
Content type
System Cost
Made Public Date
04/30/2021
Taxonomy (ARC-IT) Vehicle-Based Traffic Surveillance (TM02), Roadway Automated Treatment (MC03), Traffic Information Dissemination (TM06), Weather Information Processing and Distribution (WX02), Spot Weather Impact Warning (WX03), Work Zone Management (MC06)
Geolocation links
Minneapolis, Minnesota, United States

All divisions at the Utah DOT TOC experienced improved staffing and better resource allocations when they had improved weather information.

All five of the divisions of the Traffic Operations Center (TOC) experienced better staff and resource scheduling as a result of having the Weather Operations Program as part of the daily operations…
Content type
Benefit
Taxonomy (ARC-IT) Roadway Automated Treatment (MC03), Traffic Information Dissemination (TM06), Weather Information Processing and Distribution (WX02), Spot Weather Impact Warning (WX03), Winter Maintenance (MC04), Weather Data Collection (WX01), Infrastructure Monitoring (MC09), Traffic Signal Control (TM03)
Geolocation links
Statewide, Utah, United States

Idaho Storm Warning System Operational Test - Final Report

Notes:   On April 11, 1996, the speed limit in the project area was increased from 65 to 75 mi/h for cars and trucks. In 1998, truck speeds were reduced to 65 mi/h. This change did not…
Content type
Benefit
Taxonomy (ARC-IT) Roadway Automated Treatment (MC03), Traffic Information Dissemination (TM06), Weather Information Processing and Distribution (WX02), Spot Weather Impact Warning (WX03), Weather Data Collection (WX01), Infrastructure Monitoring (MC09)
Geolocation links
Utah, United States   |   Idaho, United States

In northern Japan, eighty percent of Snowstorm Visibility Information System users indicated they were likely to change their travel plans based on snowstorm information received

Content references source material no longer available at its original location.
The system processed weather data such as air temperature (for each 5 km mesh), wind velocity (for each 5 km mesh), and precipitation intensity (for each 1 km mesh). The CERI snowstorm visibility…
Content type
Benefit
Taxonomy (ARC-IT) Roadway Automated Treatment (MC03), Personalized Traveler Information (TI02), Weather Information Processing and Distribution (WX02), Spot Weather Impact Warning (WX03)
Geolocation links
Japan

Connected vehicle warning systems should provide drivers with actionable information that supplements in-vehicle alerts.

CV warnings are effective, but designers should be sure to give drivers actionable information along with a warning. Simply alerting drivers to upcoming bad weather conditions "did not prompt…
Content type
Lesson
Date Posted
02/25/2020
Taxonomy (ARC-IT) Roadway Automated Treatment (MC03), Traffic Information Dissemination (TM06), Weather Information Processing and Distribution (WX02), Spot Weather Impact Warning (WX03)
Geolocation links
Statewide, Wyoming, United States

UDOT’s Citizen Reporter app that utilizes crowdsourced road condition data produces annual savings of $250,000 in weather surveillance costs.

The Utah Department of Transportation (UDOT) developed a smartphone app, The Citizen Reporter, that provides a conduit for the traveling public to report road and weather conditions in real time to…
Content type
Benefit
Date Posted
12/11/2019
Taxonomy (ARC-IT) Roadway Automated Treatment (MC03), Personalized Traveler Information (TI02), Weather Information Processing and Distribution (WX02), Spot Weather Impact Warning (WX03), Traffic Information Dissemination (TM06)
Geolocation links
Utah, United States

Drivers are more accepting of on-road dynamic messages/warnings than in-vehicle message/warnings.

Findings Average acceptance of on-road warning systems (73 percent) is higher than average acceptance of in-vehicle warning system (64 percent) Drivers likely prefer on-road warning because they…
Content type
Benefit
Date Posted
10/09/2019
Taxonomy (ARC-IT) Roadway Automated Treatment (MC03), Traffic Information Dissemination (TM06), Weather Information Processing and Distribution (WX02), Spot Weather Impact Warning (WX03), Broadcast Traveler Information (TI01)
Geolocation links
Beijing, China
ITS Deployment Evaluation

INTELLIGENT TRANSPORTATION SYSTEMS JOINT PROGRAM OFFICE

1200 New Jersey Avenue, SE
Washington, DC 20590

its.dot.gov

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