Suggested

Pit Stop

Yes, the prape (a car being forced to fully hit the brakes by a car pulling out into the lane in front) is still present for both 1 and 2 car leagues. In one car leagues the situation was just recently eased a bit as not half the cars use only the last (16th) box anymore but every box is shared from now on, those 2 cars do not block each other. As in 2 car leagues those 2 cars sharing a box belong to the same team there the blocking is still enabled and only one car can pit at a time.

For some details: A pit stop takes about 4.6 seconds of standing time average. Roughly half the stops happen in the 4.5-4.7 second range, the normal range is 4.3-4.9, the total range is about 4.0-5.1 seconds. I think I saw some stops outside that range but it's either very rare to happen or just my imagination. Those very short and long stops outside the normal range are often accompanied by an event remark in the race ticker.

As I wrote above, if two cars of the same team stop in the same lap only one can be served at a time, so if the distance in between them is less than 5-6 seconds the second car will have to wait until the first has finished the stop and will loose time, up to roughly 6 seconds if they enter close together.

A car pulling out of the box has the right of way in iGP, so especially if your box is one of the first in the lane and you're closely in front of (an)other car(s) pitting at the same time there's a good chance to be blocked if it/one or some of them has/have a slightly shorter stop. Blocked that way is called prape and can easily cost 1-2 seconds in itself, but also easily cause a chain reaction if many cars pit at the same time as the lost time makes it quite likely that cars from further behind, pitting further down the lane, now manage to pull out in front as well.