[tabio]

> "as far to the right as practicable". No such requirement exists for automobiles.

Incorrect. Cars are required to drive at the speed of traffic or get off the road. Example: http://apps.leg.wa.gov/rcw/default.aspx?cite=46.61.425

Bikes have the extra privilege of using the road at slow speed.

[wl]

That may be incorrect in Washington, but it is correct in California. See CVC 21202.

https://www.dmv.ca.gov/portal/dmv/detail/pubs/vctop/vc/d11/c...