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Violations - CVC 21658

Unsafe Lane Change

California Vehicle Code Section 21658 - Laned Roadways

Whenever any roadway has been divided into two or more
clearly marked lanes for traffic in one direction, the following
rules apply:

(a) A vehicle shall be driven as nearly as practical entirely
    within a single lane and shall not be moved from the lane until such
    movement can be made with reasonable safety.

(b) Official signs may be erected directing slow-moving traffic to
    use a designated lane or allocating specified lanes to traffic
    moving in the same direction, and drivers of vehicles shall obey the
    directions of the traffic device.


Your Excuse
  1. Q: Before you made your lane change, did you do all of the followings ?
    • Turn on blinker light
    • Check blind spot
    • Check all needed mirrors

    A: Yes (that's good) or No
  2. Q: After you made a lane change, was there any cars braked hard to avoid rear-ended your car ?
    A: Yes or No (that's good)
  3. Q: What did the Officer say about this ?
    A: You almost hit that van in front of you!