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    Toolbox talk (1 minute) | Driver safety

    Rear-end collision prevention

    What you need to know

    When you rear-end someone:

    • Occupants of both vehicles are often injured
    • In heavy traffic, you may be subsequently rear-ended
    • You are almost always found to be at fault; this is true even if the driver in front of you:
      • Cut in front of you at the last minute
      • Slammed on their brakes unexpectedly

    Recommended minimum following distance (seconds)

    Increase your following distance during rain, snow, ice and fog.

    light trucks
    3 seconds

    Sedans and light trucks

    large vans
    4 seconds

    Large vans and light vehicles pulling trailers

    toolbox-Med-LargeTrucks_AdobeStock_333595035
    5-6 seconds

    Medium/large straight trucks

    toolbox-TractorTrailer_AdobeStock_61769148
    6-8 seconds

    Tractor-trailers

    Practice following at a safer distance: The National Safety Council and most state driving manuals recommend the seconds-counting method.

    • Determine the minimum number of seconds for your vehicle to stop:
      • 3 seconds for a sedan or light truck
      • 4 seconds for large vans
      • 4 seconds for light vehicles pulling trailers
      • 5 to 6 seconds for medium to large straight trucks
      • 6 to 8 seconds for tractor-trailers
    • When the vehicle in front of you passes a fixed object, such as a light post or sign, start counting seconds
    • If your vehicle passes the fixed object prior to your minimum number of seconds needed to stop, slow down and recount

    Increase your following distance:

    • During inclement weather: rain, snow, ice, fog
    • When brakes and tires are worn or with heavy loads
    • When being tailgated

    Why it matters

    There are almost 2.2 million police-reported rear-end collisions each year. Rear-end collisions account for about 32% of all crashes, far exceeding other crash types.1 When a rear-end collision occurs, occupants of all vehicles are often injured.

    The driver striking the other vehicle from behind is almost always found to be at fault. A driver is always responsible for maintaining an adequate following distance (gap) in front of them.

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    Resources for you

    Supplement this talk: Rear-End Collisions (PDF)

    Construction resources: Construction Loss Control Services

    [1] “Traffic Safety Facts 2019, Table 29: Crashes by First Harmful Event, DOT HS 813 141,” National Highway Traffic Safety Administration (August 2021).

    The information included is designed for informational purposes only. It is not legal, tax, financial or any other sort of advice, nor is it a substitute for such advice. The information may not apply to your specific situation. We have tried to make sure the information is accurate, but it could be outdated or even inaccurate in parts. It is the reader’s responsibility to comply with any applicable local, state, or federal regulations. Nationwide Mutual Insurance Company, its affiliates and their employees make no warranties about the information nor guarantee of results, and they assume no liability in connection with the information provided.