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This chapter uses Transport Infrastructure Ireland (TII) traffic count data to produce statistics of nationwide traffic activity. The TII employs Traffic Monitoring Units (TMU’s) across motorways, and national and regional roads to monitor traffic patterns in Ireland. The TMUs are equipped with technology which can accurately detect vehicle-type based on a combination of weight, distance between and number of vehicle axles.
Learn about our data and confidentiality safeguards, and the steps we take to produce statistics that can be trusted by all.