a dedicated lane for bikes

a half-lane reserved for bicycling

an official sanction of the version of The Notion that says that bikes should have their own space on the road, because the main traffic lane in the way of motor traffic is no place for bikes to be

a portion of the roadway designated for bicycle use

a portion of the roadway that has been designated by striping, signing, and pavement markings for the exclusive use of bicyclists

A portion of a street reserved for use by bikes, usually separated from general purpose lanes by a stripe of paint and signage.

A lane for bicycles that is part of the road, almost always marked with a paint stripe that separates the bike portion from the auto portion. An extended shoulder that is marked with a paint stripe. This book does not cover these.