Proposal from the task force on UN R39 Mileage Accuracy to amend and supplement the existing requirements for odometers to include provision on:

• accuracy of the on-board odometer mileage values,
• anti-tampering of the on-board odometer mileage values,
• accuracy and anti-tampering of the odometer mileage values displayed to the driver.

Proposal to clarify that all speedometers and/or odometers installed on a vehicle in the case of more than one shall comply with the requirements of UN R39.