a.Buffer cars must have their air and hand brakes set. This provides a more conservative test. Cars must be bunched to compress all slack and cushioning in the couplings, if any. The struck end of the first buffer car must have standard draft gear.b.Locate the test car between the buffer car(s) and the locomotive.c.Install one of the following timing devices (or equivalent) to obtain the impact speed of the test car.(1)An electric timing system capable of measuring within 0.16km/h (+0.1 mph): Place the switch contacts on the track in accordance with manufacturer's instructions.(2)Radar: In order to obtain an accurate speed, position the radar in line with the direction of impact or as otherwise recommended by the radar manufacturer. Verify that the radar can accurately measure speeds in the 5.6km/h to 13.7 km/h (3.5 to 8.5 mph) range with a tolerance of 0.16km/h (+0.1 mph).d.Photograph the test setup including any securement items. This may be a valuable tool if there is any subsequent failure of the items of securement.