[B’ Spokes: Note a road diet is taking 4 lane road and making a center turn lane, two travel lanes and two bike lanes.]
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By David Hiller
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As of April 2010 Seattle has implemented two-dozen road diets. The first were done in 1972 on California Ave SW and N 45th St. Since then, study after study has shown that road diets result in lower speeds, increased bicycling and walking, and fewer injuries and deaths, all while maintaining vehicle capacity. It’s what one would call a “win, win, win.”
SUCCESS ON STONE WAY
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Data collected by SDOT on Stone Way shows:
* • 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.
https://blog.cascade.org/2010/05/nickerson-street-or-%E2%80%9Chere-we-go-again%E2%80%9D/oldId.20100605182545236
Biking in Baltimore