[Figment]

I work with an idiot bike rider . He explains that you don’t keep to the right while riding because that is where glass and other flat causing debris collects.

[Blue Jays]

"...I work with an idiot who doesn’t wish to ride in broken glass and debris..."

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There...restated your post for clarity.

The laws are written a cyclist must keep as far to right as practical and not as far to right as possible on a roadway. Big difference.

Cyclists encountered on the roadway are often seen pointing towards the asphalt...it is helpful to avoid the 8”-deep potholes they’re indicating.