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Consider Using a Web-Based Mapping Tool to Improve Stakeholders’ Real-Time and Forecasted Flood Inundation Depths Along Roads, Bridges, and Other Transportation Assets.

The tool uses a mapping feature combined with a dashboard for each gage on the map. The following lessons learned can be applied from NCDOT’s experience with the tool: In addition to using real time…
Content type
Date Posted
09/29/2023

Consider Automating Weather-Related Messages on Digital Message Sign Systems, in Addition to Travel Times, Using Data from Environmental Sensor Stations.

Consider automating weather-related messages, in addition to travel times. This study clearly demonstrated that it is possible to automate the display of weather-related messages using Environmental…
Content type
Date Posted
08/31/2023

Michigan Digital Message Sign Study Reported an Installation Cost of $72,000 and an Annual Operation Cost of $2,300.

Digital Message Signs (DMS) (also referred to as dynamic message signs, variable message signs, or changeable message signs) are an important part of the Advanced Traveler Information Systems (ATIS)…
Content type
Made Public Date
08/31/2023

Evaluation of Existing Digital Message Signs in Michigan Revealed a 5.66 mph Reduction in Speed after Seeing the Weather-Related Message on Traffic Speeds.

METHODOLOGY Several field case studies were conducted to understand the effectiveness of particular messages and types of DMS, including weather-related DMS messages on driver speeds; exploring the…
Content type
Date Posted
08/31/2023

Wyoming DOT's Connected Vehicle Pilot Deployment Study Estimated a Savings of 46.5 Gallons of Diesel in Idling for Trucks Per Road Closure.

METHODOLOGY In this study, the input-output analysis took into account capacity and demand to estimate the total amount of delay associated with closing sections of I-80. The researchers used Average…
Content type
Date Posted
06/30/2023

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
Date Posted
05/26/2023
Taxonomy (ARC-IT) Weather Data Collection (WX01)

The Wyoming CV Pilot Found that Over 50 Percent of Drivers Given a Work Zone or Winter Weather Alert Reduced their Speed.

METHODOLOGY The study utilized a “Before-After” approach to quantitatively compare corridor data under baseline conditions (collected from December 2016 - November 2017) with data collected during…
Content type
Date Posted
04/03/2023

A Statewide Adverse Weather Forecasting Model in Montana Using Road Weather Information System Measurements Improved Forecasting Accuracy by 32 Percent.

METHODOLOGY The RWIS site observations were collected through a data access webpage from January 1 to March 31, 2020 and October 2020 to March 2021 from 72 sites across Montana. The data collected…
Content type
Date Posted
10/26/2022