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Abbreviations

A | B | C | D | E | F | G | H | I | J | K | L | M | N
O | P | Q | R | S | T | U | V | W | X | Y | Z

Glossary | Traffic Operations Manual

A

AADT Annual Average Daily Traffic
AB Assembly Bill
ADA Americans with Disabilities Act
ADT Average Daily Traffic
AID Automatic Incident Detection
AMBER America's Missing Broadcast Emergency Response
ANSI American National Standards Institute
API Application Programming Interface
ASTM American Society for Testing and Materials
ATIS Advanced Travel Information Systems
ATMS Advance Transportation Management System
ATMSR Advanced Transportation Management System Replacement
ATS Advanced Transportations Systems
AVL Automatic Vehicle Location
AVO Average Vehicle Occupancy
AWSC All-Way Stop Control

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B

BAIRS Bay Area Incident Response System

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C

C2C Center-to-Center
CA MUTCD California Manual on Uniform Traffic Control Devices
CAD Computer-Aided Dispatch
CalOES California Governor's Office of Emergency Services
CalSAFE California Service Authority for Freeway Emergencies/Expressways Committee
Caltrans California Department of Transportation
CAPTI Climate Action Plan for Transportation Infrastructure
CATMS California Advanced Transportation Management System
CCT Correlated Color Temperature
CCTV Closed-Circuit Television
CEQA California Environmental Quality Act
CG Center of Gravity
CHIN Caltrans Highway Information Network
CHP California Highway Patrol
CISN California Integrated Seismic Network
CLETS California Law Enforcement Telecommunications System
CO Coordinator
CORI Criminal Offender Record Information
CMS Changeable Message Sign
CMSA California Metropolitan Statistical Area
CRZ Clear Recovery Zone
CSDD Complete Streets Decision Document
CVC California Vehicle Code
CWWP2 Commercial Wholesale Web Portal 2

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D

DD Deputy Directive
DGS Department of General Services
DIAL Daily Incident Activity Logger
DMS Dynamic Message Sign
DOJ California Department of Justice
DOT State Department of Transportation
DP Director's Policy
DPHD Daily Person Hours of Delay
DTM District Traffic Manager
DTMPM District Traffic Management Plan Manager
DTSC Department of Toxic Substances Control
DVHD Daily Vehicle Hours of Delay

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E

EB Eastbound
EMS Emergency Medical Services
ENTAC Emergency Notification and Tactical Alert Center
EOC Emergency Operational Centers

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F

FBI Federal Bureau of Investigations
FCC Federal Communications Commission
FDW Flashing Don't Walk
FHWA Federal Highway Administration
FSP Freeway Service Patrol
ft Foot or Feet

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G

GIS Geographical Information System
GPS Global Positioning System
GVWR Gross Vehicle Weight Rating

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H

HAR Highway Advisory Radio
HAZMAT Hazardous Materials
HCC Headquarters Communication Center
HCM Highway Capacity Manual
HCRR Highway Condition Report Requirements
HDM Highway Design Manual
HID High-Intensity Discharge
HOV High-Occupancy Vehicle
HP Horsepower
HQ Headquarters
HR Hour
HVAC Heating, Ventilation, and Air Conditioning

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I

ICM Integrated Corridor Management
ICT Incident Clearance Time
IES Illuminating Engineering Society of North America
IMMS Integrated Maintenance Management System
in Inches
IRIS Intelligent Roadway Information System
IRT Incident Response Team
ISOAP Intersection Safety and Operational Assessment Process
ISP Information Service Providers
ITS Intelligent Transportation System

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J

J  

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K

kg Kilograms

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L

lb Pounds
LCS Lane Closure System
LRT Light Rail Transit
LPG Liquid Petroleum Gas
LZ Landing Zone

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M

m Meters
MASH Manual for Assessing Safety Hardware
MHz Megahertz
MIDB Major Incident Database
MIRT Major Incident Response Team
mm Millimeters
MOU Memorandum of Understanding
MPH Miles Per Hour
MPO Metropolitan Planning Organizations
MSA Metropolitan Statistical Area
MUTCD Manual on Uniform Traffic Control Devices

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N 

NCHRP National Cooperative Highway Research Program
NHTS National Household Travel Survey
NIMS National Incident Management System
NTCIP National Transportation Communications for Intelligent Transportation System Protocol

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O

OES California's Governor's Office of Emergency Services
OHS Office of Homeland Security
OI Operational Improvement

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P

PAX Passenger
PCAC Private Call Answering Center
PCMS Portable Changeable Message Sign
PDPM Project Development Procedures Manual
PDT Project Development Team
PeMS Performance Measurement System
PHD Person Hours of Delay
PID Project Initiation Document
PIN Priority Index Number
PIO Public Information Officer
PRG Priority Request Generator
PRS Priority Request Server
PSD Public Safety Dispatcher
PSDS Public Safety Dispatcher, Supervisor
PY Personnel Year

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Q

Q  

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R

RAMS Remote Agent Messaging System
RCT Roadway Clearance Time
ReDIAL Renewed Daily Incident Activity Logger
RFP Request for Proposal
RP Recommended Practice
RV Recreational Vehicle
RWIS Roadside Weather Information System

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S

SAFE Service Authority for Freeway Emergencies/Expressway
SB Senate Bill
SCP Signal Control and Prioritization
SEC Seconds
SEMS Standardized Emergency Management System
SER Standard Environment Reference
SHC California Streets and Highways Code
SHS State Highway System
SHSMP State Highway System Management Plan
SOC Satellite Operations Centers
SR State Route

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T

TAC Technical Advisory Committee
TDM Transportation Demand Management
TET Transportation Engineering Technician
TIM Traffic Incident Management
TMA Truck-Mounted Attenuator
TMC Transportation Management Center
TMCAD Transportation Management Center Activity Database
TMCAL Transportation Management Center Activity Logging
TMP Transportation Management Plan
TMS Transportation Management System
TMT Traffic Management Team
TMU Traffic Management Unit
TOC Traffic Operations Center
TOD Time of Day
TSMIS Transportation Safety and Mobility Information System
TSP Transit Signal Priority
TTY Teletype

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U 

URL Uniform Resource Locator
USDOT United States Department of Transportation

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V

VDS Vehicle Detector Stations
VEH Vehicle

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W

WB Westbound

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X 

X  

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Y

Y  

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Z

Z

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