California Vehicle Code Section 22107 establishes clear requirements for drivers changing lanes on any roadway. The law mandates that motorists must signal their intention to change lanes for at least 100 feet before making the maneuver, and they must ensure the lane change can be completed safely without endangering other road users. This includes checking mirrors, looking over their shoulder to eliminate blind spots, and yielding to cyclists who have the right of way in bike lanes. When drivers fail to follow these requirements and collide with cyclists, they violate their duty of care and can be held liable for resulting injuries.
The presence of designated bike lanes adds another layer of legal protection for cyclists under California law. Vehicle Code Section 21209 prohibits drivers from entering or crossing bike lanes except when making turns, entering or leaving the roadway, or parking where permitted. Even in these situations, drivers must yield to cyclists already in the bike lane. Our personal injury attorneys have successfully represented numerous cyclists who were struck by drivers illegally entering bike lanes during unsafe lane changes, securing substantial compensation for their clients' injuries and losses.