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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…
Taxonomy: Dynamic Message Signs, In-Vehicle Systems, Mobile Winter Maintenance, Atmospheric Conditions, Pavement Conditions, Traffic Signal Control

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.…
Taxonomy: Dynamic Message Signs, Atmospheric Conditions, Pavement Conditions

Respondents surveyed after two winter storms reported 83 and 95 percent satisfaction respectively per storm with UDOT's mobile traffic app and road weather reporting system.

METHODOLOGYTo evaluate the project, a pilot test was conducted to demonstrate operations from January through April 2013. Several storm events occurred during this period. Operational data were…
08/29/2014
Taxonomy: Atmospheric Conditions, Pavement Conditions

A weather responsive signal control system installed on a busy corridor in Utah improved travel times by 3 percent and reduced overall stopped times by 14.5 percent during severe winter weather events.

METHODOLOGYTraffic volume and speed data were collected with and without the system operational to evaluate impacts on travel time and delay. The TrEPS model was used to evaluate impacts. Interviews…
08/29/2014
Taxonomy: Adaptive Signal Control, Atmospheric Conditions, Pavement Conditions, Traffic Signal Control

Use of weather information shows benefit-cost ratios of 1.8 to 36.7, with winter maintenance costs reduced by $272,000 to $814,000.

MethodologyA winter maintenance cost model was established to estimate the materials, labor and equipment for a given maintenance unit (e.g., shed, garage, cost center, or patrol yard) as a function…
06/22/2011
Taxonomy: Mobile Winter Maintenance, Atmospheric Conditions

Utah DOT's Weather Operations/RWIS program provides a benefit-cost ratio of 11:1 from reduction in winter maintenance costs.

MethodologyThe purpose of the study was to determine the benefits and costs associated with the program's impact on the winter maintenance program. For simplicity, the benefits were limited to…
05/18/2011
Taxonomy: Mobile Winter Maintenance, Atmospheric Conditions

Rural Road Weather Information System deployments show estimated benefit-cost ratios of 2.8 to 7.0.

MethodologyData outputs were obtained from the statewide travel demand model to use as inputs into the ITS Deployment Analysis System (IDAS) model. The model data included both network files and…
05/11/2011
Taxonomy: Atmospheric Conditions, Pavement Conditions

Weather Notification System issues on time alerts 88.9 percent of time, but message coverage remains incomplete.

MethodologyThe evaluation examined four adverse weather events that occurred in the Sacramento region between December 2009 and April 2010 - one fog event, and three wind events. Post-…
05/06/2011
Taxonomy: Dynamic Message Signs, Atmospheric Conditions, Permanent TMCs

A Maintenance Decision Support System (MDSS) used by MaineDOT aided maintenance crews by providing visual aids to track storms, recommending treatments, extending trend forecasts, and creating training opportunities.

METHODOLOGY The methodology involved a careful tracking of each of 12 winter storm events, coupled with a reconstruction of the crew’s decision processes and treatment actions throughout each…
12/19/2010
Taxonomy: Information Dissemination, Response & Treatment, Mobile Winter Maintenance, Atmospheric Conditions, Pavement Conditions

In Salt Lake City, Utah, staff meteorologists stationed at a TOC provided detailed weather forecast data to winter maintenance personnel, reducing costs for snow and ice control activities, and yielding a benefit-to-cost ratio of 10:1.

RESULTS By examining the labor and materials cost for winter maintenance in the 2004-2005 season for 77 UDOT sheds, an artificial neural network model was trained and tested to establish the shed…
11/19/2008
Taxonomy: Internet / Wireless / Phone, Mobile Winter Maintenance, Atmospheric Conditions, Pavement Conditions, Multi-Agency / Co-Located
ITS Deployment Evaluation

INTELLIGENT TRANSPORTATION SYSTEMS JOINT PROGRAM OFFICE

1200 New Jersey Avenue, NE
Washington, DC 20590

1-800-853-1351

its.dot.gov

Focus Areas

Benefits

Costs

Deployment Statistics

Executive Briefings

Lessons Learned

Taxonomy Description (PDF)

Database Tutorial

Contact

Topics

Arterial Management

Freeway Management

Roadway Operations & Maintenance

Crash Prevention & Safety

Road Weather Management

Transportation Management Center

Alternative Fuels

Traffic Incident Management

Transit Management

Emergency Management

Traveler Information

Driver Assistance

Information Management

Commercial Vehicle Operations

Intermodal Freight

Electronic Payments & Pricing

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