Urban vehicle access regulations (UVARs) is a form of traffic management that regulates access in specific urban locations according to vehicle type, age, emissions category – or other factors such as time of day, or day of the week. UVARs can include Low Emission Zones (LEZs) and/ or Congestion Charging and involve a wide range of considerations in implementation.

Urban vehicle access regulations are becoming an increasingly popular method of managing vehicle flows through urban areas.