Unit of Measure

In the AAMVA model, the preferred units used for a given measurement are the default units in the jurisdiction of record. E.g. the vehicle weight in the U.S. is measured in pounds, but in Canada it is measured in Kilograms. The preferred units applies to

• Distance & speed (miles/km & mph/kph)
• Length (foot-inch/cm)
• Liquid (gal/l)
• Weight (lbs/kg)

D20 promotes model data definitions, but also describes data elements used in well established applications. So while AAMVA promotes preferred standards for units of measure, some elements in D20 may deviate form the standard due to the requirements and usage in an application.