What is a stop-go penalty?
Jump starts and pit lane speeding incur a 10 second 'stop-go' penalty - the driver comes into the pit lane, drives to the end and waits by a countdown marker until released. (The car may NOT stop at their pits for any reason on the way to the end of pit lane). One of the pit crew attends with engine starting kit in case the driver stalls. No other work is allowed on the car during this stop, which will cost the driver about 30 seconds in total. (Jump starts are adjudicated electronically and there has been a great deal of criticism that the equipment is too sensitive in detecting ANY movement after the car first stops even if it is actually stationary when the light goes green. The consensus in rasf1 is that the 10 second stop-go penalty is too severe).