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Old 04-24-2013, 10:53 AM
Status: "Summer!" (set 17 days ago)
 
Location: Foot of the Rockies
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Quote:
Originally Posted by nei View Post
I thought normally in roundabouts entering traffic yields to traffic already in the roundabout.
True. But with stop signs instead of a roundabout, the traffic on the main road does not have to slow down like it does to enter the roundabout.
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Old 04-24-2013, 11:18 AM
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Location: Long Island / NYC
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Quote:
Originally Posted by Katiana View Post
True. But with stop signs instead of a roundabout, the traffic on the main road does not have to slow down like it does to enter the roundabout.
True. That's an advantage if one of the roads is more obviously a main road than the other. If both are equal, then maybe it makes more sense to slow all the traffic down, rather than one stop and the other not stop. For larger intersections, roundabouts can be a replacement for traffic lights, so they could save more time.

As to the OP, the removing traffic lights and signs from all road works if the traffic can be slowed down to pedestrian speed.
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Old 04-24-2013, 01:33 PM
 
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Quote:
Originally Posted by iNviNciBL3 View Post
So what's wrong with stop lights again? I rarely run into any issues while at a stop light.
Good question. Traffic lights encourage drivers to 'floor it' and go as fast as they can in order to 'beat the light.' Which of course is dangerous. And you can speed through the intersection at 50mph or more without stopping as long as the light is green (whereas all traffic is forced to slow to a crawl before entering the roundabout)...which often leads to spectacular high-speed collisions. The signal itself causes drivers to have tunnel vision and are inherently dangerous.
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Old 04-24-2013, 02:03 PM
 
Location: Fishers, IN
4,164 posts, read 4,616,068 times
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Quote:
Originally Posted by Katiana View Post
True. But with stop signs instead of a roundabout, the traffic on the main road does not have to slow down like it does to enter the roundabout.
I work in the self-proclaimed roundabout capital of the US. Most of the roundabouts here replaced either traffic lights or 4-way stops. I absolutely love roundabouts because of the amount of time they save over having to sit at a red light. On the busier roads, there are multi-lane roundabouts where they cross the lesser roads but if there wasn't a roundabout, there would need to be a traffic light as the lesser road is still a heavily traveled thoroughfare.

One of the major divided highways through town had a traffic light about every half mile at major cross roads. The city took on a multi-year project to remove all the traffic lights and turn each intersection into teardrop roundabout interchanges. It's made it very nice on the main road where you can travel 5 miles through town without slowing down at all and also on the cross streets where you may need to slow down, or even stop for a couple cars, but you don't have to sit for a minute or longer waiting on a red light. So this is what we have now instead of a traditional annoying stoplight and multiple left turn lanes.

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Old 04-24-2013, 02:09 PM
 
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Besides the potential danger...traffic lights are also an eyesore.





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Old 04-24-2013, 04:05 PM
 
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Quote:
Originally Posted by ischyros View Post
I work in the self-proclaimed roundabout capital of the US. Most of the roundabouts here replaced either traffic lights or 4-way stops. I absolutely love roundabouts because of the amount of time they save over having to sit at a red light. On the busier roads, there are multi-lane roundabouts where they cross the lesser roads but if there wasn't a roundabout, there would need to be a traffic light as the lesser road is still a heavily traveled thoroughfare.

One of the major divided highways through town had a traffic light about every half mile at major cross roads. The city took on a multi-year project to remove all the traffic lights and turn each intersection into teardrop roundabout interchanges. It's made it very nice on the main road where you can travel 5 miles through town without slowing down at all and also on the cross streets where you may need to slow down, or even stop for a couple cars, but you don't have to sit for a minute or longer waiting on a red light. So this is what we have now instead of a traditional annoying stoplight and multiple left turn lanes.
Looked it up on GMaps. You weren't kidding about the number of roundabouts.
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Old 04-24-2013, 04:19 PM
 
Location: North by Northwest
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Quote:
Originally Posted by cisco kid View Post
Besides the potential danger...traffic lights are also an eyesore.
I've never seen traffic lights that look anything like that.

And I hope you're not suggesting that traffic lights are universally dangerous?
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Old 04-24-2013, 05:35 PM
 
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Quote:
Originally Posted by HeavenWood View Post
I've never seen traffic lights that look anything like that.
You never saw a red light camera before?

Quote:
Originally Posted by HeavenWood View Post
And I hope you're not suggesting that traffic lights are universally dangerous?
Compared to roundabouts, yes traffic lights are more dangerous.

WSDOT - Roundabout Benefits
Roundabouts reduced injury crashes by 75 percent at intersections where stop signs or signals were previously used for traffic control, according to studies by the Insurance Institute for Highway Safety (IIHS) and Federal Highway Administration....



Besides providing a big safety improvement roundabouts are better and more efficient at handling traffic flow. And are cheaper to build and maintain by eliminating the complexity and expense of traffic lights.

Reduce delay, improve traffic flow

Contrary to many peoples' perceptions, roundabouts actually move traffic through an intersection more quickly, and with less congestion on approaching roads. Roundabouts promote a continuous flow of traffic. Unlike intersections with traffic signals, drivers don’t have to wait for a green light at a roundabout to get through the intersection. Traffic is not required to stop – only yield – so the intersection can handle more traffic in the same amount of time.

Studies by Kansas State University Center for Roundabouts Research and Training measured traffic flow at intersections before and after conversion to roundabouts. In each case, installing a roundabout led to a 20 percent reduction in delays. Additional studies by the IIHS of intersections in three states, including Washington, found that roundabouts contributed to an 89 percent reduction in delays and 56 percent reduction in vehicle stops.
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Old 04-24-2013, 05:46 PM
 
Location: North by Northwest
7,442 posts, read 9,878,709 times
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Quote:
Originally Posted by cisco kid View Post
You never saw a red light camera before?
Ours are far better concealed.


Quote:
Originally Posted by cisco kid
Compared to roundabouts, yes traffic lights are more dangerous.

WSDOT - Roundabout Benefits
Roundabouts reduced injury crashes by 75 percent at intersections where stop signs or signals were previously used for traffic control, according to studies by the Insurance Institute for Highway Safety (IIHS) and Federal Highway Administration....



Besides providing a big safety improvement roundabouts are better and more efficient at handling traffic flow. And are cheaper to build and maintain by eliminating the complexity and expense of traffic lights.

Reduce delay, improve traffic flow

Contrary to many peoples' perceptions, roundabouts actually move traffic through an intersection more quickly, and with less congestion on approaching roads. Roundabouts promote a continuous flow of traffic. Unlike intersections with traffic signals, drivers don’t have to wait for a green light at a roundabout to get through the intersection. Traffic is not required to stop – only yield – so the intersection can handle more traffic in the same amount of time.

Studies by Kansas State University Center for Roundabouts Research and Training measured traffic flow at intersections before and after conversion to roundabouts. In each case, installing a roundabout led to a 20 percent reduction in delays. Additional studies by the IIHS of intersections in three states, including Washington, found that roundabouts contributed to an 89 percent reduction in delays and 56 percent reduction in vehicle stops.
Right, but roundabouts only make sense in certain spots. Places where traffic bottle-necks (and where there's the room) is probably best.
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Old 04-24-2013, 06:04 PM
 
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Quote:
Originally Posted by HeavenWood View Post

Right, but roundabouts only make sense in certain spots. Places where traffic bottle-necks (and where there's the room) is probably best.
Generally true. They make most sense on bigger and busy intersections.
The traffic calming effect can also greatly improve walkability for pedestrians and cyclists. People don't like to walk on signaled intersections where vehicles are passing through at 40 to 50 mph.
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