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Studies of rumble strips - this being one - have rather focused on crash reductions, noise pollution, effect on cyclists and roadway cracking. By all accounts,

by pp19dd 6y ago

Studies of rumble strips - this being one - have rather focused on crash reductions, noise pollution, effect on cyclists and roadway cracking. By all accounts, tire wear is beyond negligible unless you're driving on a flat tire. Only measurable damage in studies appears to be road wear (edge cracking) and the effect of migrating cluster of accidents to stretches of road without rumble strips. Vehicle crash reductions vary from state to state but averages lean toward 20% overall, 45% head-on and sideswipes, and 65-70% on long highways. Of those reductions, 20% less alcohol and drug related run-offs, 40% less sleep-related incidents. The best rumble strip design is the one most hated by cyclists. https://www.sciencedirect.com/science/article/pii/S1996681416300670 https://www.sciencedirect.com/science/article/pii/S199668141... https://safety.fhwa.dot.gov/roadway_dept/research/conts_rumble/conts_rumble.pdf https://safety.fhwa.dot.gov/roadway_dept/research/conts_rumb...

burlesona 6y ago
I didn’t realize there was more than one rumble strip design. Which one is most hated by cyclists, and why?
- pp19dd 6y ago
  "Bicycle-friendly rumble strips" (PDF): https://www.codot.gov/programs/research/pdfs/2001/bfrs.pdf/ https://www.codot.gov/programs/research/pdfs/2001/bfrs.pdf/ May 2001, Colorado DOT research. There's a clear table 7, "bicyclist preference versus vehicle sound and vibration levels" but the conclusion is basically: "There is no ideal solution. The motor vehicle tables are very nearly opposite the bicycle table for all configurations of rumble strips."
SECProto 6y ago
> The best rumble strip design is the one most hated by cyclists. What design is that? Links do not make anything clear. As a cyclist, I think any rumble strips would be annoying if they eliminate the shoulder (the only somewhat safe place to bike). But in Canada rumble strips are mostly only used on highways, where you'd never want to bike anyway.
- pp19dd 6y ago
  First link: "Outcalt 2001 [9] Tested vibration and sound readings for cyclists and 4 vehicles types. SRS rated best by cars and worst by cyclists. Recommended design was 3/8″ depth, 12″ width, 48′ skip pattern with SRS and 12′ gap"

by pp19dd 6y ago

burlesona 6y ago

I didn’t realize there was more than one rumble strip design. Which one is most hated by cyclists, and why?

pp19dd 6y ago
"Bicycle-friendly rumble strips" (PDF): https://www.codot.gov/programs/research/pdfs/2001/bfrs.pdf/ https://www.codot.gov/programs/research/pdfs/2001/bfrs.pdf/ May 2001, Colorado DOT research. There's a clear table 7, "bicyclist preference versus vehicle sound and vibration levels" but the conclusion is basically: "There is no ideal solution. The motor vehicle tables are very nearly opposite the bicycle table for all configurations of rumble strips."

SECProto 6y ago

> The best rumble strip design is the one most hated by cyclists. What design is that? Links do not make anything clear. As a cyclist, I think any rumble strips would be annoying if they eliminate the shoulder (the only somewhat safe place to bike). But in Canada rumble strips are mostly only used on highways, where you'd never want to bike anyway.

pp19dd 6y ago
First link: "Outcalt 2001 [9] Tested vibration and sound readings for cyclists and 4 vehicles types. SRS rated best by cars and worst by cyclists. Recommended design was 3/8″ depth, 12″ width, 48′ skip pattern with SRS and 12′ gap"