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Red & Green Lights at front of semi-trailers?

Discussion in 'Questions To Truckers From The General Public' started by Howard70, Feb 16, 2014.

  1. Feb 16, 2014 #1
    Howard70

    Howard70 Bobtail Member

    2
    0
    Feb 16, 2014
    0
    Hello:

    New to the forum, I apologize if this is covered elsewhere. I've seen some trailers (maybe trucks also - memory isn't what it ought to be) with small green and red lights on the front. Lights are visible from the side & front. They remind me of port & starboard navigational lights on boats. What are they for? Is green always on the same side and red on the other?

    Thanks,

    Howard
     
    Howard70, Feb 16, 2014
    Howard70, Feb 16, 2014
    #1
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  3. Feb 16, 2014 #2
    sixthgear11

    sixthgear11 Light Load Member

    197
    192
    Sep 24, 2011
    myrtle beach, sc
    0
    It's a light tied to a reefer unit to let the driver know the unit is working, or if there is a problem.
     
    sixthgear11, Feb 16, 2014
    sixthgear11, Feb 16, 2014
    #2
    ewill71 Thanks this.
  4. Feb 16, 2014 #3
    Howard70

    Howard70 Bobtail Member

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    Feb 16, 2014
    0
    Thanks, that makes sense. I was caught up in "green = starboard, red = port" and oncoming vessels pass green to green, which didn't seem very useful on the highway.

    Howard
     
    Howard70, Feb 16, 2014
    Howard70, Feb 16, 2014
    #3
  5. Feb 28, 2014 #4
    720johndeere62

    720johndeere62 Bobtail Member

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    3
    Feb 16, 2014
    0
    A quick look in the mirror lets driver know if the unit is working correctly and what the unit is currently doing.The unit must maintain a constant temp heating, cooling, defrost,ect.
     
    720johndeere62, Feb 28, 2014
    720johndeere62, Feb 28, 2014
    #4
  7. May 31, 2017 #5
    James Johnson

    James Johnson Light Load Member

    97
    17
    May 27, 2017
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    Letting everybody that is working properly instead not working. If they stop working what I will do is pull over and look what's wrong with the trailer. That's why you see lights on trailers.
     
    James Johnson, May 31, 2017
    James Johnson, May 31, 2017
    #5
  8. May 31, 2017 #6
    bzinger

    bzinger Road Train Member

    16,593
    65,735
    Dec 10, 2014
    omaha , ne
    0
    Amber on the reefer light means it is time to add fuel or oil to some drivers lol
     
    bzinger, May 31, 2017
    bzinger, May 31, 2017
    #6
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