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Definitions (66)
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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 [..]
Meaning awaits approval from a moderator |
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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 [..]
Meaning awaits approval from a moderator |
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automatic traffic recorder
permanent device in the pavement surface that continuously and automatically collects traffic data.
Meaning awaits approval from a moderator |
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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.
Meaning awaits approval from a moderator |
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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)
Meaning awaits approval from a moderator |
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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 [..]
Meaning awaits approval from a moderator |
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axle load
the total load transmitted by all wheels in a single, tandem, or tridem axle configuration.
Meaning awaits approval from a moderator |
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base year
in a traffic forecast, the year construction will be completed and the roadway will be open to traffic.
Meaning awaits approval from a moderator |
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bituminous esal
the equivalent single axle load for a bituminous or flexible pavement.
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