4 ms·

The other thing about 4-way stop intersections in the US is that the right-of-way rules when two vehicles arrive at the intersection at the same time is not qui

by u801e 9y ago

The other thing about 4-way stop intersections in the US is that the right-of-way rules when two vehicles arrive at the intersection at the same time is not quite what one would expect. That is, the vehicle to the right has the right of way. If the intersection was controlled by a roundabout, then the vehicle to the left would have the right of way.

lsllc 9y ago
In the US right-of-way for a 4-way stop is order of arrival, with yield to your right if you arrived at the stop line at the same time as someone else. https://en.wikipedia.org/wiki/All-way_stop#Operation https://en.wikipedia.org/wiki/All-way_stop#Operation In general it works fairly well even in areas notorious for bad driving (although sometimes people steal a turn, I've never seen someone blow right through one, even late at night). Roundabouts are different. It's a one-way street that goes in a counter-clockwise circle, so naturally you if you are joining (effectively taking a right turn onto it) you must yield to traffic already on the roadway (that would be traffic coming from your left) as you would when turning right onto any street. Once you are on it, you now have right of way. 4-way stops are more deterministic, whereas traffic can get "starved" trying to enter a roundabout. However, you always must stop at a 4-way (even if it's a rolling stop), whereas you can blast through a roundabout if there's no-one to yield to.
- u801e 9y ago
  > In general [4-way stop] works fairly well If you're not considering intersection throughput, then that may be true, but 4-way stops are one of the worst forms of intersection control when there's even a moderate amount of traffic. > Roundabouts are different. Of course, but what I was implying when I made my post is that a 4-way stop sign controlled intersection right-of-way rule is unusual compared to most traffic situations where one has to yield the right of way. At a yield sign, one typically yields to traffic coming from the driver's left. When entering a highway, one yields to traffic on their left. When making a right turn on red, one yields to traffic on their left after coming to a full stop. Only when coming to a 4-way stop are the right-of-way rules reversed it seems. > whereas traffic can get "starved" trying to enter a roundabout. One thing that's done in the UK is to add traffic lights at the entrances to busy roundabouts. When traffic gets heavy, the activate the traffic lights to regulate traffic flow to prevent the starvation scenario that you mention. To me, that's the best of both worlds where one isn't legally required to stop even when there's no traffic approaching.

by u801e 9y ago

lsllc 9y ago

In the US right-of-way for a 4-way stop is order of arrival, with yield to your right if you arrived at the stop line at the same time as someone else. https://en.wikipedia.org/wiki/All-way_stop#Operation https://en.wikipedia.org/wiki/All-way_stop#Operation In general it works fairly well even in areas notorious for bad driving (although sometimes people steal a turn, I've never seen someone blow right through one, even late at night). Roundabouts are different. It's a one-way street that goes in a counter-clockwise circle, so naturally you if you are joining (effectively taking a right turn onto it) you must yield to traffic already on the roadway (that would be traffic coming from your left) as you would when turning right onto any street. Once you are on it, you now have right of way. 4-way stops are more deterministic, whereas traffic can get "starved" trying to enter a roundabout. However, you always must stop at a 4-way (even if it's a rolling stop), whereas you can blast through a roundabout if there's no-one to yield to.

u801e 9y ago
> In general [4-way stop] works fairly well If you're not considering intersection throughput, then that may be true, but 4-way stops are one of the worst forms of intersection control when there's even a moderate amount of traffic. > Roundabouts are different. Of course, but what I was implying when I made my post is that a 4-way stop sign controlled intersection right-of-way rule is unusual compared to most traffic situations where one has to yield the right of way. At a yield sign, one typically yields to traffic coming from the driver's left. When entering a highway, one yields to traffic on their left. When making a right turn on red, one yields to traffic on their left after coming to a full stop. Only when coming to a 4-way stop are the right-of-way rules reversed it seems. > whereas traffic can get "starved" trying to enter a roundabout. One thing that's done in the UK is to add traffic lights at the entrances to busy roundabouts. When traffic gets heavy, the activate the traffic lights to regulate traffic flow to prevent the starvation scenario that you mention. To me, that's the best of both worlds where one isn't legally required to stop even when there's no traffic approaching.