 If his driver was incapacitated he might not have realised that the junction points were not set for the main line, as both arms of the junction signals were on and gave no indication of which way the points were lying.He might also have failed to reconnect the brake pipe or open the train brake cock.Automatic vacuum brakes were fitted on all passenger trains, so if any air entered the brake pipes due to a failed connection, the brakes would be automatically applied.