VELOCITITATION

When the cruise control function is active, the velocity must not change with uphill and downhill driving in the accuracy of the cockpit, i.e. within a +/- 1 km/h range on a 20 ms time frame.

Test: Monitor the vehicles velocity with GPS to get exact measurements. Also monitor the vehicles pitch angle to determine how steep the ascent/descent is. To get a reference velocity, measure the GPS velocity while the system is active and the vehicles pitch angle is 0°. Then drive uphill and downhill and measure the vehicles velocity as well as the pitch angle. (Missing in requirement: What means “uphill”/”downhill”, are there any angle requirements?)