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The UK is replacing roundabouts with traffic lights; US is doing the opposite

theguardian.com

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Re: The UK is replacing roundabouts with traffic lights; US is doing the opposite

#71

Post by ScottRAB »

jotux wrote: post #16
r0m4n0 wrote: post #11

Earlier quoted context omitted.

Or my personal favorite in Sacramento, roundabout with some stop signs sprinkled in. I hear horns and accidents daily... https://www.google.com/maps/@38.5801855,-121.4694376,3a,75y,...

Live in Sacramento, the half-roundabouts drive me crazy. Here's another: https://www.google.com/maps/@38.6759386,-121.5367581,3a,90y,...

Neighborhood traffic circles are not modern roundabouts. Many people confuse other and older styles of circular intersections with modern roundabouts. East coast rotaries, large multi-lane traffic circles (Arc D’Triomphe, Dupont Circle), and small neighborhood traffic circles are not modern roundabouts. If you want to see the difference between a traffic circle, a rotary (UK roundabout) and a modern roundabout (UK continental roundabout), go to http://tinyurl.com/kstate-RAB to see pictures. And here’s another site that shows the difference between an older rotary and a modern roundabout: http://tinyurl.com/bzf7qmg

Re: The UK is replacing roundabouts with traffic lights; US is doing the opposite

#72

Post by ScottRAB »

ilyanep wrote: post #18
r0m4n0 wrote: post #11

Earlier quoted context omitted.

Or my personal favorite in Sacramento, roundabout with some stop signs sprinkled in. I hear horns and accidents daily... https://www.google.com/maps/@38.5801855,-121.4694376,3a,75y,...

There are some of these in Palo Alto, as well. I don't think they tend to result in accidents, but I never really understood the point of putting a stop sign on a roundabout. If I remember correctly, the justification of these here is that they are better for bikes than 4-way stops (which is true, but they're probably not the optimal solution). https://www.google.com/maps/@37.4420644,-122.1552851,3a,75y,...

If it has a stop sign, it is a traffic circle with different rules than a modern roundabout.

Re: The UK is replacing roundabouts with traffic lights; US is doing the opposite

#73

Post by ScottRAB »

function_seven wrote: post #47
fryguy wrote: post #28

Earlier quoted context omitted.

There are a lot of 2-way stops in that area.

My wording is kinda of muddy. A 2-way stop isn't itself dangerous. I think seeing an island makes the intersection appear more like a roundabout, and makes drivers approaching from the side streets think that all entrances to that roundabout will have a stop sign.

DMV manual fail. All way stops have a small sign below the stop sign that says ALL WAY. Any stop sign without that rider sign is not at an all way stop intersection.

Re: The UK is replacing roundabouts with traffic lights; US is doing the opposite

#74

Post by ScottRAB »

Tloewald wrote: post #24
r0m4n0 wrote: post #11

Earlier quoted context omitted.

Or my personal favorite in Sacramento, roundabout with some stop signs sprinkled in. I hear horns and accidents daily... https://www.google.com/maps/@38.5801855,-121.4694376,3a,75y,...

For true insanity you need to go to Washington DC which has roundabouts with divided lanes, pedestrian crossings, traffic lights, stop signs, and turning lanes. https://www.google.com/maps/place/Washington,+DC/@38.9092507... https://www.google.com/maps/place/Washington,+DC/@38.9020455...

Traffic circles and rotaries are not modern roundabouts. If any of the entry lanes has a stop sign, it’s not a modern roundabout. If you could play a game of football in the center landscaped area, it’s not a modern roundabout. If the circular roadway has a stop sign, yield sign or signal, it’s not a modern roundabout. If you don’t have to slow down to enter it, it’s not a modern roundabout. If you have to change lanes in the circular roadway to exit, it’s not a modern roundabout. If you can easily drive faster than 20 mph in the circular roadway, it’s not a modern roundabout. If it has a park for pedestrians, or a building, in the middle, it’s not a modern roundabout.

Re: The UK is replacing roundabouts with traffic lights; US is doing the opposite

#75

Post by function_seven »

ScottRAB wrote: post #73
function_seven wrote: post #47

Earlier quoted context omitted.

My wording is kinda of muddy. A 2-way stop isn't itself dangerous. I think seeing an island makes the intersection appear more like a roundabout, and makes drivers approaching from the side streets think that all entrances to that roundabout will have a stop sign.

DMV manual fail. All way stops have a small sign below the stop sign that says ALL WAY. Any stop sign without that rider sign is not at an all way stop intersection.

Yup. I am a fan of this sign (https://commons.wikimedia.org/wiki/File:Cross_traffic_does_n...) instead of this one (http://safety.fhwa.dot.gov/intersection/resources/casestudie...)

Re: The UK is replacing roundabouts with traffic lights; US is doing the opposite

#76

Post by fryguy »

function_seven wrote: post #75
ScottRAB wrote: post #73

Earlier quoted context omitted.

DMV manual fail. All way stops have a small sign below the stop sign that says ALL WAY. Any stop sign without that rider sign is not at an all way stop intersection.

Yup. I am a fan of this sign ( https://commons.wikimedia.org/wiki/File:Cross_traffic_does_n... ) instead of this one ( http://safety.fhwa.dot.gov/intersection/resources/casestudie... )

If you look a few blocks away there's that sign: https://www.google.com/maps/@38.5676945,-121.4748759,3a,75y,...
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