Bicycles are vehicles too. Some bicyclists ignore the rules. That doesn't mean you should imitate their behavior.
Most crashes involving bicyclists and motorists occur at intersections.
This often happens when a motorist pulls out from a stop sign or driveway without yielding, or turns across the bicyclist's path. When turning right, slow and merge behind a bicyclist ahead of you to make your turn from the right edge of the road. When turning left, yield to on- coming bicyclists, even those at the far side of the road. Do not underestimate the speed of a bicyclist. A stop sign means you must stop and wait until no traffic is coming close enough to be a danger.