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Old 06-04-10, 08:58 AM   #1
Bekologist
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road diets in Seattle- two dozen since 1972, proven effective on several fronts

here's a link to a post about Seattle's recent road diets at the largest cycling club in the nations' website from David Hiller, Cascade Bicycle Club's advocacy director.

Seattle has improved two dozen significant routes thru road diets and rechannelization. These road diets are proving to:

reduce speeding by a significant extent,
increase pedestrian safety,
increase effective use and safety of roads for bicyclists,
and increase ADT carrying capacity of roads by reducing turn delays from center two lanes of traditional four lane arterial layouts.

link here to the cascade article, cascade its about three articles down and i couldn't link directly to it due to quotes in the tagline.

and a link the a seattle transportation brief on the latest rechannelization project

SDOT statements on Nickerson road diet

despite the effectiveness and lack of negative impact on freight or carrying capacity while at the same time significantly increasing safety for road users and pedestrians, road diets seem to always be met with knee-jerk NIMBYism from local business groups.


some statistics from the latest road diet on Stone Way:

Motor vehicles now traveling at speeds closer to the posted 30 mph limit.
• A decline of more than 80 percent in those going faster than 40 mph.
• The changes made to the street lowered total all collisions by 14 percent and pedestrian collisions by 80 percent.
• Motor vehicle traffic volume decreased 6% on the corridor over the study period. This might lead one to believe that the project increased traffic on adjacent streets as people changed routes to avoid delays, but traffic decreased more on adjacent streets than it did on Stone Way N itself.
• Bike traffic – the stuff we care about – increased 35% over the period and represents 15% of the peak hour volume.


Road diets work to calm streets, increase safety and reduce barriers to effective roadway bicycling.

Last edited by Bekologist; 06-04-10 at 09:06 AM.
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Old 06-04-10, 09:13 AM   #2
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Here in San Diego a road diet was quite successful on an often used and "abused" beach route. Roundabouts were installed and the traffic speeds were reduced, but throughput was actually increased.
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Old 06-04-10, 11:20 AM   #3
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I would like to see more pictures about how they did that. I keep thinking my road should be calmed a little. People think they can use it to get through to the town center, but our road is a dead end. So they go down to the end of the road, find out they can't get through, and speed back out. Our town claims to have started memorial day, so the Memorial Day weekend is a big deal here. Before, during, and after the parade, there is a large number of people driving down our street looking to get downtown. But it happens all the time. There are kids playing, people walking dogs, etc, and it can get fairly dangerous with people driving 50 mph.

I also think the main drag should go from 4 lanes plus left turn to a 2 lane plus center lane. People are always going 60 on there, it's outrageous.
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Old 06-04-10, 11:38 AM   #4
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I would like to see more "lean" designs on new road projects rather than just retrofits. The one-size-fits-all 4-lane thoroughfare designs with 50 mph design speeds that end up being used for new roads in lots suburban areas with concentrated pedestrian and cyclist activity are inappropriate and unnecessary.

Cary plans to road-diet part of Kildaire Farm Road between Maynard and Dry. It's currently four narrow lanes, mostly without a center turn lane. I ride it on my commute and take the center of the right through lane, which isn't a problem for me, but drivers who want to pass the stopped left-turning traffic have to match my speed until they clear the turning traffic. The new design should be pleasant enough for my family to want to join me riding on that section of road despite the high volume of traffic.
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Old 06-04-10, 11:54 AM   #5
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Isn't the Nickerson road diet meeting tonight? The one where they solicit opinions from the public?
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Old 06-04-10, 01:29 PM   #6
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Quote:
Originally Posted by unterhausen View Post
I would like to see more pictures about how they did that. I keep thinking my road should be calmed a little. People think they can use it to get through to the town center, but our road is a dead end. So they go down to the end of the road, find out they can't get through, and speed back out. Our town claims to have started memorial day, so the Memorial Day weekend is a big deal here. Before, during, and after the parade, there is a large number of people driving down our street looking to get downtown. But it happens all the time. There are kids playing, people walking dogs, etc, and it can get fairly dangerous with people driving 50 mph.


I also think the main drag should go from 4 lanes plus left turn to a 2 lane plus center lane. People are always going 60 on there, it's outrageous.

It is visible on Google.

See this URL. http://maps.google.com/maps?client=f...21694&t=h&z=16
Note the area on La Jolla Blvd from Forward street south to Sea ridge drive... that was the area of improvement, however the speeds traffic tend to carry a bit further south and north. There are 3 roundabouts in that area; this was done with narrowing the lanes from 2 to one.

The result is that motorists move at a stately pace of about 30 MPH and slow to 15MPH at the roundabouts... a vast improvement over motorists moving closer to 40MPH and doing CA stops at the old stop signs in the area. (previous posted Speed limit was 35MPH) Due to the lack of current stop signs, throughput has actually increased. Local merchants also report better traffic due to more pedestrians and the ability of motorists to actually see the signs for shops at the slower speeds.
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Old 06-04-10, 01:30 PM   #7
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Wayne Wentz is in Arlington, VA now. He discussed this a few times.

The cascade website has links to the research on which they base their statements.

http://www.cascade.org/Advocacy/Resources.cfm
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Old 06-04-10, 05:01 PM   #8
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Quote:
Originally Posted by Bekologist View Post
and a link the a seattle transportation brief on the latest rechannelization project

SDOT statements on Nickerson road diet

despite the effectiveness and lack of negative impact on freight or carrying capacity while at the same time significantly increasing safety for road users and pedestrians, road diets seem to always be met with knee-jerk NIMBYism from local business groups.
FYI - I was wrong. SDOT will be asking for the public's opinions on the road diet for Nickerson on Tuesday the 8th, at 9:30 am. Which, unfortunately, is during work hours. If anybody in the region wants to show up in support of the re-channeling, though, you should!
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