Heavy Hauler Light Sizes

Discussion in 'Heavy Haul Trucking Forum' started by DesignEngineer, Aug 20, 2019.

  1. DesignEngineer

    DesignEngineer Bobtail Member

    Aug 20, 2019
    I am currently designing a 6 axle heavy hauler and am currently working on the required lights. i have found some documents about what color lights are required and where to place them, although I can't seem to find anything which states a size for any of the lights needed. Specifically for the top mounted strobe lights, does anyone use a standard size? Or is generally just a rule of thumb that they can be any size as long as they are visible? If they just have to be visible, is there a brightness amount needed?
    Last edited: Aug 20, 2019
  2. beastr123

    beastr123 Road Train Member

    Jan 2, 2014
    Moose Jaw SK CAN
    it is state regulated and therefore there is no set rule. There are minimum standards in some states that are largely ignored now since the improvement in LED technology. Because most manufactured LED lighting solutions today are designed to meet or exceed those minimums such as visible distance, flash rate, color and 360 degree visibility. Most rooftop "light-bars" available will be acceptable depending on mounting, visible from the side as well as the front.
    Auxiliary or added lighting is just that, added help to attract attention to the truck to make it stand out from normal. Flashing grill lights, mirror lighting and bumper lights are a good example of this and help with close quarters traffic.
    If you are going with any of these please insure that they do not interfere with or overpower your directional signal lights, or add more signal lights if you are concerned that they may be.
    Many jurisdictions also regulate trailer auxiliary lighting and some include 360 degree view, height above the roadway, color and flash rate. In this area you should include load extremity lighting such as extendable or swing-out lighting for night travel. Load extremity lighting can be regulated in size and there are jurisdictions that require 4" lighting although most do not specify. There are also some that insist on red to the rear for extremity lights and some want all amber. This is not usually enforced but may be used as a "reason to stop" or a extra add-on for a ticket or inspection notation.
    Last edited: Aug 20, 2019
  3. blairandgretchen

    blairandgretchen Road Train Member

    Dec 9, 2011
    South west Missouri
    Solid answer right there hand.
    Oxbow and beastr123 Thank this.
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