Sebastian Vettel has called on F1 to change the rules governing car movement when the red lights go out at the start of a race.
Following Valtteri Bottas blistering launch off the grid of the Austrian GP last Sunday, Vettel disputed the Finn's equally fast reaction time, estimated at 0.201 of a second.
Current rules permit some movement of the car after the fifth light goes on, allowing for the engagement of the clutch.
Yet Vettel says that this means a driver can anticipate the start of the race, rather than react purely to the lights going out.
"If you're moving exactly at the same point the lights go off you definitely are on the risky side rather than the safe side," admitted Bottas last weekend.
"Everyone is obviously free to kind of guess when the lights go off."
However, Vettel said that is wrong.
"He got away with it because that's the way the rules are," said the Ferrari driver.
"So we should look at the rules more closely.
"I don't think any of us would risk trying to repeat what he did. If he tried it again he would not succeed, because it's impossible to predict the time of the start.
"His car started to move just before the lights went out. But even if you start at the same time, the human response is still greater than zero tenths of a second."