United States Department of Transportation
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Implementation and evaluation of the Sacramento Regional Transportation Management Center Weather Alert Notification System.
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2010-08-01
[PDF-3.50 MB]
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Edition:Evaluation Report, 10/9/08 ¿6/30/10
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NTL Classification:NTL-INTELLIGENT TRANSPORTATION SYSTEMS-Road Weather Management
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Abstract:This report presents the results of an evaluation of Caltrans District 3 Regional Transportation Management Center’s (RTMC)
implementation of a weather alert notification system. This alert system was selected for implementation from among several weather
information integration strategies identified by the RTMC through a self-evaluation process supported by the FHWA Road Weather
Management Program. The weather types of particular interest to RTMC operations are fog, wind and frost. These weather conditions
have potential consequences for the operation of their transportation system and the safety of the traveling public. The RTMC desired to
more effectively and proactively manage their system and keep their traveling public well informed when faced with these weather
conditions. They implemented a system that automatically generates adverse weather warnings and alerts to the RTMC operators to help
them make more timely and effective decisions regarding posting advisory messages to the public on electronic roadside message signs.
Quantitative and qualitative data were collected to support evaluation measures in both the baseline and post-deployment periods. The
evaluation focused on several significant weather events (fog, wind and frost), documenting the alerts, the progress of the event, and
operator messaging responses to the event. It identified a need for operator training and for clear procedures to guide the use of the alert
system, and these improvements were implemented on an on-going basis during the course of the evaluation over the 2009-2010 winter
period. Management intends to fine tune their alert system, including adding additional sensors when their budgets will allow that, based
on the evaluation findings, to further enhance the alert system’s effectiveness.
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