U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Best Practices for Road Weather Management Version 3.0: California DOT Fog Detection and Warning System

File Language:
English


Details

  • Corporate Creators:
    United States. Federal Highway Administration
  • Subject/TRT Terms:
  • Resource Type:
    Brief
  • Geographical Coverage:
    United States;California
  • Corporate Publisher:
    United States. Federal Highway Administration
  • Abstract:
    California’s Great Central Valley suffers from Tule fog. It is a thick ground fog which reduces visibility to one hundred feet or less that settles in the San Joaquin Valley and Sacramento Valley areas of California's Great Central Valley. Tule fog forms during the late autumn and winter (California's rainy season) after the first significant rainfall. This phenomenon is named after the tule grass wetlands (Tulare’s) of the Central Valley. Accidents caused by the tule fog are the leading cause of weather-related traffic accidents in California. In response the California Department of Transportation (Caltrans) contracted ICx Transportation to build and integrate a fog detection and warning system along a 13-mile section of the California Highway 99 corridor in the central part of the state. The system was completed in 2009.
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:642baf10c7f9121c19b26647b766ab8665a8a3393c75f69483e17f6c0220de0bbfbe958c2dd15539959f333f4f8be74bc82a10e71eb3903dcb6045c5aab189e9
  • Download URL:
  • File Type:
    Filetype[PDF - 36.58 KB ]
PREVIOUS
File Language:
English
ON THIS PAGE
Details
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP