Montana Department of Transportation

Main Content

Section Title

Traffic Data Collection and Analysis

Common Acronyms

Acronymn Definition
AADT Annual Average Daily Traffic
ADT Average Daily Traffic
AADTT Annual Average Daily Truck Traffic
ATR Automatic Traffic Recorder
AVMT Annual Vehicle Miles Traveled (of Traffic)
CMS County, Mapsheet, Station (Count Site ID)
DHV Design Hour Volume = K * ADT (usually 30th highest hour)
DVMT Daily Vehicle Miles Traveled (of Traffic)
ESAL Equivalent Single-Axle Load
MADT Monthly Average Daily Travel
MPO Metropolitan Planning Organization
NHS National Highway System
NI-NHS Non-Interstate National Highway System
PWIM Portable Weigh In Motion
RP Reference Post (Mile Post)
TBS Traffic By Sections
TDC Traffic Data Collection
TDCA Traffic Data Collection and Analysis Section
TMG Traffic Monitoring Guide
TYC Traffic Yearly Counts
VMT Vehicle Miles Traveled (of Traffic)
WIM Weigh In Motion (an ATR that weighs vehicles)