Tonight while biking WB on the Scott St cycle track the cyclist behind me wiped out after not noticing that there is a ~3 inch lip from the sidewalk to the bike lane. They hit their face, thankfully had a helmet on. @emmettproulx.bsky.social , can you explain why such a big drop? Very dangerous! - ThreadSky

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arielgrostern.bsky.social • 44 days ago

Tonight while biking WB on the Scott St cycle track the cyclist behind me wiped out after not noticing that there is a ~3 inch lip from the sidewalk to the bike lane. They hit their face, thankfully had a helmet on. @emmettproulx.bsky.social , can you explain why such a big drop? Very dangerous!

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emmettproulx.bsky.social•44 days ago

This exact spot, or somewhere else?

arielgrostern.bsky.social•44 days ago

No, more east. The separated section between hinchey and parkdale, North side.

emmettproulx.bsky.social•44 days ago

Thanks for the clarification. The new standard (informally as of 2021, and formally as or 2023) for delineation between cycle tracks directly and sidewalks where they are directly adjacent is a short 60mm curb. This is required so people with vision loss can detect the edge of the sidewalk.

emmettproulx.bsky.social•44 days ago

Previously we used an at-grade paver with raised "ribs" in an alternating paver. See: Main Street, newer section of Albert/Slater/Bronson, etc. However, feedback received from the accessibility community was these were not easily detectable and the treatment was not understood.

emmettproulx.bsky.social•44 days ago

I'm sorry to hear about the crash. However, I don't want to jump to conclusions about the safety of the treatment. Many people may still be unfamiliar. As it is more widely used I expect people will anticipate a curb to be there (just like they expect a curb at the edge of a road).

arielgrostern.bsky.social•44 days ago

Thanks for the info.
Definitely a challenging situation, where design accommodations for one group lead to safety challenges for another groups.
That curb is not visible at night, nor under snowy conditions.
But def the person who crashed yesterday will be more aware in the future, as will I!

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