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Old 02-16-2019, 01:02 PM
 
Location: Midwest
4,010 posts, read 6,925,650 times
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Quote:
Originally Posted by boxus View Post
There is a government requirement based on width, not recall how many inches. But have no idea why those who do not need it have it, other than "just because" or "looks nice".
"It's cool and it sells." ?
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Old 02-16-2019, 01:25 PM
 
13,989 posts, read 12,728,727 times
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Quote:
Originally Posted by Dwatted Wabbit View Post
"It's cool and it sells." ?
I ordered my 96 f-350 with the clearance light because I thought it looked cool. It was an option. A friend had a 96 without the lights.
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Old 02-16-2019, 01:42 PM
 
Location: Metro Detroit Michigan
3,543 posts, read 969,400 times
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And allot of companies order them with the clearance lights so they will be more visible at night when they are parked in a construction zone at night.
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Old 02-16-2019, 02:42 PM
 
Location: We_tside PNW (Columbia Gorge) / CO / SA TX / Thailand
21,486 posts, read 38,531,863 times
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Quote:
Originally Posted by easy62 View Post
And allot of companies order them with the clearance lights so they will be more visible at night when they are parked in a construction zone at night.
Visibility for safety is a good idea (40+ yrs as night shift CDL driver). Anything that helps in a blizzard / fog is a plus.

It is also nicer to drive at night with the cab lights reflecting on the hood / antenna's / mirrors / air cleaners, stacks... Just happens to 'brighten' your otherwise DARK endless hours on the road.
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Old 02-16-2019, 06:32 PM
 
Location: OH>IL>CO>CT
4,947 posts, read 7,890,228 times
Reputation: 6701
The relevant Federal rules are here if you care to wade thru them

https://www.ecfr.gov/cgi-bin/retriev...se49.5.393_125
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Old Yesterday, 11:43 AM
 
9,725 posts, read 11,646,505 times
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DOT requires them based on weight of the vehicle
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Old Today, 11:10 AM
 
Location: NY
320 posts, read 232,932 times
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Quote:
Originally Posted by somebodyfromnc View Post
....3/4 ton trucks have them as an option.
Also optional for 1-ton trucks with single rear wheels. But why? I bought my SRW truck new off the lot and it had them already on it; now, 10 years later they are leaking.
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Old Today, 02:48 PM
 
Location: Metro Detroit Michigan
3,543 posts, read 969,400 times
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Quote:
Originally Posted by halberto9 View Post
Also optional for 1-ton trucks with single rear wheels. But why? I bought my SRW truck new off the lot and it had them already on it; now, 10 years later they are leaking.


If you make a vehicle that's over 80 inches wide, it starts to fall into various "commercial vehicle" categories, and one of the requirements of vehicles this size is that they have -- in the words of our government -- "three amber front and three red rear identification lamps spaced between 6 and 12 inches apart at the center of the front and rear of the vehicle, as high as practicable." This is why you see these lights on an F-150 Raptor (over 80 inches wide) and not on a regular F-150 (79.9 inches wide -- likely not a coincidence). It's also why you see the lights on heavy-duty trucks and not light-duty models.

And so that's why certain vehicles have little orange marker lights on the roof. Now, every time you'll see them, you'll know they're mandated by the government
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Old Today, 03:56 PM
 
3,873 posts, read 2,039,062 times
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And it is also a way to let other vehicles know they are approaching a wider than normal vehicle
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