Seeing to the Sides and Rear It's important to know what's going on behind and to the sides. Check your mirrors regularly. Check more often in special situations.
Mirror Adjustment Mirror adjustment should be checked before the start of any trip and can only be checked accurately when the trailer(s) are straight. You should check and adjust each mirror to show some part of the vehicle. This will give you a reference point for judging the position of the other images.
Regular Checks You need to make regular checks of your mirrors to be aware of traffic and to check your vehicle.
Traffic Check your mirrors for vehicles on either side and in the back of you. In an emergency, you may need to know whether you can make a quick lane change. Use your mirrors to spot overtaking vehicles. There are "blind spots" that your mirrors cannot show you. Check your mirrors regularly to know where other vehicles are around you, and to see if they move into your blind spots.
Check Your Vehicle Use the mirrors to keep an eye on your tires. It's one way to spot a tire fire. If you're carrying open cargo, you can use the mirrors to check it. Look for loose straps, ropes, or chains. Watch for a flapping or ballooning tarp.
Special Situations Special situations require more than regular mirror checks. These are lane changes, turns, merges, and tight maneuvers.
Lane Changes You need to check your mirrors to make sure no one is alongside you or about to pass you. Check your mirrors:
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Before you change lanes to make sure there is enough room.
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After you have signaled, check that no one has moved into your blind spot.
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Right after you start the lane change, double-check that your path is clear.
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After you complete the lane change.
Turns In turn, check your mirrors to make sure the rear of your vehicle will not hit anything.
Merges When merging, use your mirrors to make sure the gap in traffic is large enough for you to enter safely.
Tight Maneuvers Any time you are driving in close quarters, check your mirrors often. Make sure you have enough clearance.
STATE TEST TIPS: CHECK YOUR MIRRORS EVERY 6-8 SECONDS. DURING TURNS, INTERSECTIONS AND LANE CHANGES MAKE SURE TO DO SIX MIRROR CHECKS: TWO BEFORE THE TASK (CHECK LEFT & RIGHT), TWO DURING THE TASK (CHECK LEFT & RIGHT), AND TWO AFTER THE TASK (CHECK LEFT AND RIGHT).
QUESTION: Is it ok to travel down the road and not check your mirrors in any situation?