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How to Share the Road With Semi Trucks


Stay far enough behind a semi truck that you can see the roadway ahead clearly.


Position your vehicle so you are outside the truck's blind spot, and be sure the truck driver can see you in the rearview mirror. If you cannot see the truck's mirror, the driver cannot see you.


Dim your lights at night. Bright lights reflected in the mirrors can blind the driver.


Stay back in rainy conditions. Spray and splash from the rear wheels can cover your windshield with sheets of water or mud.


Check to your front and rear before moving into the passing lane. Only pass if it is clear and you are in a legal passing zone.


Increase your speed to pass a truck on a downhill grade. Trucks travel faster downhill and slower uphill because of their weight.


Complete your pass as quickly as possible.


Let the driver know he has passed you by blinking your headlights, especially at night. The driver will appreciate knowing he is now safe to move back in front of you.

Tips and Warnings

  • A truck's blind spots are immediately in front, on either side of the cab, and up to 200 feet in the rear.
  • A trucker may not be able to see the road directly in front of the cab. If the tractor has a long hood, the trucker may not be able to see the first 10 to 20 feet of concrete in front of the bumper.
  • If you are stopped behind a truck on an uphill grade, stay to the left in your lane so the driver can see you. When stopped in a traffic lane, leave extra space in front of your car in case the truck rolls back slightly when it starts to move.

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