Understand UK road traffic data
Practical, manually reviewed guides built around questions people ask after finding a road—not rewritten dataset descriptions.
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Numbers need context
A traffic estimate can look precise while still carrying important limits. These guides explain collection methods, coverage and sensible comparisons before you act on one number.
01
Understanding AADF
What vehicles per average day means—and what it cannot tell you.
Read guide →02Counted vs estimated traffic
How DfT creates each figure and how much confidence to place in it.
Read guide →03Why local-road data is missing
Why some streets have no count point and why nearest does not mean same road.
Read guide →04How to compare two roads
A careful comparison method using road type, year, location and vehicle mix.
Read guide →05Using traffic data before moving home
Useful checks, important limits and questions for local authorities.
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