Traffic flow on Britain’s roads: how to measure it and other information taken from surveying it.
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Types of data
Information about traffic in addition to counting it: for example, speed surveys.
Traffic count point data, and how it is collected.
Estimates of overall traffic flow, and how they are calculated.
Telematic traffic data, and how it is collected.
National traffic estimates: an overview
Annual average daily mileage: how is it calculated?
Telematic traffic data pros and cons
Speed surveys and the 85th percentile: why does it matter?
What is the relationship between traffic and crashes?