Roundabouts & blocking entry

[Toltec]

Heres Johnny said:

Toltec said:

Hmm, so does that mean that if the vehicles in front are moving when you enter it you are fine? If several vehicles past the box are moving, however traffic means that they will need to stop such that vehicles already in the box will stop preventing your exit your tend to get a fine. How far ahead do you have to allow for the presence of stationary vehicles?

Isn't that part of the art of reading the road? Nothing stopping you entering a box junction even if the car in front is still in the box junction if you can see there is nothing going to stop the car in front from exiting the box junction and leaving you room to also exit. If the car in front spontaneously burst into flames and had insufficient momentum leaving you potentially stuck in the box then you'd either drive round them or make a sharp left or right turn.

Too many people just ignore reading the road ahead like that, in fact too many people in queuing traffic don't even leave a gap when they're adjacent to a left side road so oncoming traffic can turn across them if they want to enter that side road. Being up the arse of the car in front rarely actually makes a difference to your journey time.

Yes, you need to read the road, however the situation can change unexpectedly after you commit to enter the box, a car could push in from a side road or be let in by a car in front, a driver past the box could decide to stop to let some pedestrians across as examples.

The relevance being that at the point of entering a roundabout it may look like you will be able to exit, however that could change, once you have commited to entering not blocking an entrance could mean blocking an exit, which is arguably worse.