In a rolling start, when can you overtake cars in front of you from the fourth row of the grid?

In a rolling start, overtaking can take place as soon as the start signal is given. This is because, during a rolling start, the cars are already moving in formation behind the pace car, and the race is considered to have started once the official signal is given.

This allows drivers to strategically position themselves as soon as the race officially commences, which includes the opportunity to gain places before reaching the first corner. It's crucial for drivers to remain aware of their surroundings and the behavior of other competitors at this point, as there may be opportunities for overtaking right from the start.

Other options suggest limitations on overtaking that do not align with the rules governing rolling starts. For example, waiting until after the first corner or after the second lap unnecessarily restricts drivers at a point where they are permitted to race immediately. Similarly, the suggestion that overtaking should only happen after the pace car leaves does not coincide with the racing regulations governing starts.