How much space must you give a bicyclist when passing in California?
You are passing a bicyclist on a two-lane road and cannot move into another lane to do it. How much space must you leave?
The answer
Leave at least three feet between your vehicle and the bicyclist. If you cannot give three feet, wait until you can.
The handbook says that when you cannot change lanes to pass a bicyclist, you must allow at least three feet between your vehicle and the bicyclist, and not pass until you can.
It also advises moving left to leave plenty of room and, if oncoming traffic is steady, using as much of the left lane as you safely can. Handle one hazard at a time: let the oncoming car pass first.
Exceptions
- The handbook says to allow three feet when you cannot change lanes to pass. When you can change lanes, it says to pass safely, leave space and then return to your lane.
Why this rule matters for safety
Cyclists need room so they are not forced toward parked cars or opened doors. Waiting until you can leave three feet gives them that room.
Official sources
- California Driver's Handbook, Section 7: Laws and Rules of the Road (continued) · California DMVBicycles: Passing a Bicyclist; no edition date shown on the page; site copyright 2026
- California Driver's Handbook, Section 8: Safe Driving (continued) · California DMVChoose Between Hazards: passing a bicyclist; no edition date shown on the page; site copyright 2026
Rules checked against these sources on . Laws change. Confirm with the California agency before you rely on this for a legal matter.
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