Just want to clarify on penalties, do tell me if I get anything wrong.
If you skip both sides of the detour, you will get a 24 hour penalty? [Unlikely that this can happen now. Back in TAR1, the detour which Nancy and Emily skipped was purely a choice between 2 modes of transport, and there was no task master to intervene and prevent them from entirely skipping it.]
If you attempted at least 1 side of the detour, but there are some reasons that didn't allow you to complete it, you will get a 4 hour penalty, like Josh and Brent? But in the case of Maria and Tiffany, there was no such thing as a closing time for their detour options, and they are forced to quit and get eliminated? Did they technically get any sort of penalty?
What about driving past the speeding limit in legs where teams self-drive? It has not been given to any team since TAR2 (for US version).
What about quitting a roadblock? Is the 4 hour penalty applied right after you declare you quit, or 4 hours after the next team arrives? What if you're already the last team to arrive?
You're way off
The 24 hour penalty was the penalty for quitting a Detour (both sides) up until TAR 17. Nowadays the penalty is apparently 6 hours (which is the amount of time Nick & Vicki were given in TAR 17 in Hong Kong). Anyway, I haven't watched TAR1 yet.
Josh & Brent sure did get a 4-hour penalty for the pool having to close and them unable to complete it. I'm sure that would've been the case for the library side of the Detour as well. For Maria & Tiffany, they were just unable to complete their Detour because it was quite too physical for them. It was their decision to quit, they weren't forced.. although yes, they technically did get a penalty which was 24 hours at the time.
Teams don't self-drive as much anymore sadly, but Terence & Sarah were given a penalty for speeding by boat which consisted of 30 minutes. Same thing, I haven't watched TAR2 either.
The 4-hour penalty is applied right after they decide, I don't recall such rule of it being applied after the next team arrives?
Hope this cleared everything