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Colorado Class R Knowledge Practice Test
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Passing target: 80% (24/30)
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You are parked beside a traffic lane. A bicyclist is approaching your driver-side door from behind. What should you do?
A side mirror shows a bicyclist approaching from behind beside the vehicle. No door handle or selected door-opening action is emphasized.
Correct answer: Keep the door closed until the bicyclist has passed.
Why
Check mirrors and look behind before opening a door into traffic. Wait until opening is reasonably safe and does not interfere with another road user. Keep the door open only as long as needed to load or unload. Using the hand farther from the door can help you turn and look behind.
Verified against Colorado Driver Handbook · Opening a door beside a bicycle · p. 26
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