dot.state.mn.us

Website:http://dot.state.mn.us
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Definitions (66)

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acceptable percent change criteria


When screening incoming short count data the adjusted
Source: dot.state.mn.us

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adjusted count


a raw traffic count that is adjusted by the specific month and day of the week Seasonal Adjustment Factor (SAF) from the “cluster group” to which it is assigned.  If applicable, it may be adjusted by [..]
Source: dot.state.mn.us

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annual average daily traffic


the theoretical estimate of the total number of vehicles using a specific segment of roadway (in both directions) on any given day of the year. This estimate represents the total number of cars per ye [..]
Source: dot.state.mn.us

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automatic traffic recorder


permanent device in the pavement surface that continuously and automatically collects traffic data. 
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average daily load


the estimate of a daily load on a roadway segment; calculated from the daily total vehicle type multiplied by their appropriate ESAL factors.
Source: dot.state.mn.us

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average daily traffic


a 24-hour traffic volume that should be qualified by stating a time period, (e.g., MADT – monthly average daily traffic, or ADT for the period 6/21/2011-6/23/2011)
Source: dot.state.mn.us

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axle correction factor


corrects for vehicles with 3 or more axles that contribute “extra” axle hits to the raw 48 hour traffic count. These factors are calculated from vehicle classification counts and are used on the Trunk [..]
Source: dot.state.mn.us

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axle load


the total load transmitted by all wheels in a single, tandem, or tridem axle configuration.
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base year


in a traffic forecast, the year construction will be completed and the roadway will be open to traffic.
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bituminous esal


the equivalent single axle load for a bituminous or flexible pavement.
Source: dot.state.mn.us


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