ÅDT
ÅDT is a traffic-volume metric used in Norway and other Nordic countries. The acronym comes from Norwegian Årsdøgntrafikk, and it is commonly translated as Annual Average Daily Traffic. It represents the average number of vehicles that pass a reference point on a road during a calendar year.
Calculation and data sources: Data are collected from traffic counting devices such as inductive loops, pneumatic
Applications: ÅDT is used in road planning, capacity analysis, and design standards. It serves as a baseline
Relation to other metrics: ÅDT is equivalent to the English term AADT (Annual Average Daily Traffic). It
Limitations: As an annual average, ÅDT smooths out daily and hourly fluctuations and may not reflect peak