Acronyms and Abbreviations
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3R |
resurfacing, restoration, and rehabilitation |
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AADT |
Annual Average Daily Traffic |
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AASHTO |
American Association of State Highway and Transportation Officials |
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AMF |
accident modification factor |
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Caltrans |
California Department of Transportation |
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DDHV |
design hourly volume for one direction |
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DOT |
Department of Transportation |
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FHWA |
Federal Highway Administration |
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HMA |
hot mix asphalt |
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HMVMT |
hundred million vehicle miles traveled |
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HOV |
high occupancy vehicle |
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HSM |
Highway Safety Manual |
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IHSDM |
Interactive Highway Safety Design Model |
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ITS |
intelligent transportation systems |
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km/h |
kilometers per hour |
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mi/h |
miles per hour |
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MUTCD |
Manual of Uniform Traffic Control Devices |
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NCHRP |
National Cooperative Highway Research Program |
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NHS |
National Highway System |
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PCC |
portland cement concrete |
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SPF |
safety performance function |
|
SR |
State Route |
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TWLTL |
two-way left-turn lane |
|
vpd |
vehicles per day |
