This test is sometimes referred to as “cycle D”. The UDDS schedule was the basis for developing the FTP Transientengine dynamometer cycle. The HD-UDDS cycle should not be confused with the FTP72/LA4 cycle for light-duty vehicles, which is also called UDDS.
The following are basic parameters of the cycle:
- Duration: 1060 seconds
- Distance: 5.55 miles = 8.9 km
- Average speed: 18.86 mi/h = 30.4 km/h
- Maximum speed: 58 mi/h = 93.3 km/h