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Thread: Illegal Mods

  1. #1

    Default Illegal Mods

    This might be a stupid question, but with all the headlight, tail light, trail light mods out there where do you look to see what is illegal or not. Is it the vehicle code in your state, is it that any mod that is not original equipment is illegal???? I love all the info here on mods but the police in my area can be real ball bust***. Anyone have a difinitive answer?
    The diference between stupidity and genius is that genius has limits.

    2007 NBS Silverado
    LT2 Z71
    2.5" Levelling Kit
    Hood Stripes
    Chrome Grill
    GM Bed Liner & Tonno
    Dick Cepek Rims 18X9
    Hankook RF10 Tires 275/65/18
    De-Badged Tailgate

    More Mods Coming

  2. #2
    Jr. Apprentice
    Join Date
    Mar 2008
    San Diego, CA


    in my un-expert understanding of the law, as long as the lights have a Department Of Transportation approval then theyre legal. most of the lights have a number either etched or molded into the plastic for the purpose of showing cops that youre all legal. anything that says "for offroad use only" is not legal to use on the road.

  3. #3


    any ting with a dot on it is legal it has to have D.O.T.

    2004 1500 silverado z71
    3inch lift 33inch bfg at ta ko
    flowmaster eghaust intake
    smoke third brake light and tail light
    15% tint on front windows
    and system

  4. #4
    Sr. Engineer nickgiacalone's Avatar
    Join Date
    Mar 2009
    Metro Detroit, MI


    I know in Michigan it is not legal to have more then 4 driving lights. Example, if you have your low beams and fogs on that is all you can have. If you have a a push bar of some kind with lights, even if they are DOT approved, you cannot run those, your fogs, and your lows. But again, every state is different, its kind of like the window tint laws.
    2013 Silverado 1500 4x4 LT, Z71 Appearance Package, Vortec 5.3L AFM
    Victory Red, Ebony Cloth
    Custom pin striping, Bed Rail Protectors, GM Bed Liner, Husky Liner Floor Liners, Tint, Wade In-Channel Window Visors, Tractor Supply Black Low Profile Toolbox

  5. #5
    TRPLXL2's Avatar
    Join Date
    Jan 2009
    Norwalk, Ohio
    Blog Entries


    Normally what I do before I do anything to the truck is go to the Highway patrol station, they are the strictest judges of aftermarket parts on vehicles. In Ohio we also have the no more than 4 lights at a time on, but that doesn't mean that you can't have them installed and use some of them. I have a total of 10 lights that I can have on my truck at once, but that doesn't mean that I drive around with all of those on at one time!

    Another reason I go to the highway patrol is because you'll get a definitive answer, and not the old "well try them out they should be okay" routine. Basically you are taking matters in your own hands when it comes to aftermarket stuff, it depends on which cop you get that's in a bad mood.
    2004 Chevy Colorado
    LS1 5.7 swap/TBSS rear axle swap

  6. #6


    as long as its got the DOT... or you can check local laws... the vht niteshades for example say its for offroad use only... but here in tx as long as your lights are visible within a certain distance at night and day then youre all set... main thing is to not look for any trouble which i TRY to do...
    2008 NBS Silverado Z85

    4.8 V8
    -8000k HIDS
    -AVS Bugflector II
    -20% tint all around
    -17x9 Moto Metal 951
    -Rough Country 2'' Leveling Kit
    -Putco Window Visors
    -Blacked out headlights (courtesy of JAKD-UP)
    -285/70/17 BF Goodrich All Terrains (minimal rubbing still) :grrrrrr:
    -Blacked out grille and both bumpers
    -Smoked taillights
    -Blue interior dome lights

    "A work in progress is something every man should have"

  7. #7


    Thanks for the help everybody!

  8. #8


    This site carries the Pennsylvania state vehicle and driving regulations and laws.

    Anyone modifying their vehicle should look on line for their particular states vehilce laws and regulations, almost every state has a website listing vehicle and driver regulations and laws ( the do's and dont's of driving).
    All states are required to adhere to Federal DOT standards but may enforce stricter standards than those of the Federal DOT. Trusting an item to be legal because it has DOT approval does not mean it's legal for use in your particular state.
    An example would be HID lights, even though they have DOT approval certain states have outlawed use of them on state controlled highways and roadways. And even though an item may be legal in your particular state the state your visiting may not allow use on their roadways, youre responsible for knowing the laws and regulations even if your just visiting.

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