Sharing the Road in California
California roads are shared by vehicles of vastly different sizes, speeds, and vulnerabilities. Understanding how to safely interact with motorcycles, cyclists, large trucks, and other road users is both a legal requirement and a life-saving skill.
Large Trucks & Blind Spots
Large trucks have four major blind spots: directly in front, directly behind, and along both sides (especially the right side). If you cannot see the truck driver's mirrors, they cannot see you. Never cut off a large truck — they need much more distance to stop. Allow extra space when following a truck, especially in windy conditions.
Motorcycles
Motorcycles are entitled to the full width of the lane. Do not share a lane with a motorcyclist. Give motorcyclists extra following distance — they can stop faster than cars. Check your blind spots carefully before changing lanes, as motorcycles are easy to miss. Watch for motorcycles at intersections — failure to yield is the leading cause of car-motorcycle collisions.
Bicycles
Pass bicyclists with at least 3 feet of clearance. Do not force a cyclist off the road. When turning right, yield to a bicyclist in the bike lane. Check for cyclists before opening your car door (the 'Dutch reach'). Cyclists may ride in the center of a lane when the lane is too narrow to safely share.
Key Rules at a Glance
- Truck blind spots: Front, rear, and both sides — if you can't see their mirrors, they can't see you
- Motorcycle lane sharing: Prohibited — they have the full lane
- Passing a cyclist: Minimum 3 feet of clearance required
- Right turn and bicycle lane: Yield to cyclists before crossing the bike lane