Newsflash: fog lights are for use in fog

I have a new pet peeve, which is:

Misaligned/misplaced foglights that are left on by discourteous drivers all the time.

First, let’s discuss properly configured foglights. Foglights are intended to be brighter and lower to the ground than your headlights, resulting in more light reflecting off the ground back to you, and less light that is simply glare in the fog at headlight-level. Because of the extra brightness, properly configured foglights also have a sharp cutoff so as to not blind other drivers – distance with foglights is not needed because if you are driving in fog, you shouldn’t be driving fast to begin with.

Now, let’s talk about misaligned foglights. Unfortunately, not all foglights are used like they are supposed to be. Because foglights are lower to the ground, they are more subject to misalignment, and I don’t think (can anyone verify this?) there are any regulations for foglight alignment. Also, a lot of American cars (and some imports) don’t seem to understand the function of foglights and make them without the proper cutoff or even bother with alignment. They seem to think they are simply an auxiliary headlamp. A “low” high-beam.

Now, let’s talk about misplaced foglights. Let’s talk about big honking gas-guzzling road-hogging piece of shit SUVs (which are another pet peeve altogether) with foglights mounted at approximately the eye-level of other drivers. Foglights don’t do any good if they are 4 feet off the ground. This makes them, in fact, not fog lights at all, but rather super bright auxiliary headlamps. Let’s talk about having some asshole in an Excursion creep up on your bumper blaring 100 watts of light into your rearview mirror. Let’s talk about nearly driving off the road, blinded because some idiot rounds the corner on an unlit street with his high beams and foglights on. (If car manufacturers had any sense they would make the wiring so that using high beams and foglights at the same time was impossible).

example of good foglights on a BMW M5 example of bad foglights on a GMC
Good foglights. Bad foglights.

So, in conclusion (repeat after me):

  1. Fog lights are not for use in clear weather
  2. Fog lights are not for use in average rain (this is somewhat debatable, but even light low to the ground will not help illuminate wet pavement – in fact, it will probably just reflect it into some other poor sap’s eyes)
  3. Fog lights are not auxiliary headlights so that you can illuminate the 100 yards in front of you like a baseball stadium
  4. Fog lights are not ornamental. Leaving them on doesn’t make you look cool, it makes you look like an inconsiderate idiot.
  5. Fog lights are for .. are you ready? .. FOG!

Drive safely.


Comments

Another issue i’d like you to address is top-end speed of vehicles! Although driving at extremely high speeds doesn’t pose anywhere near the same hazard is misaligned lights, it’s like the first runner up y’know? If car manufacturers had any sense they would put a governor on all engines that could go real fast. It’s so frustrating to me when some asshole wrecks into me at 130mph! Of course this only happens with SUV’s and not cars that Smart People drive, so I guess nobody reading this will have to worry about it. Cars with extremely high top-end speed are not just ornamental; they’re to cause road fatalities!

Chris WageApril 11, 2002 at 01:28 · reply

Uh, they do put governors on all engines that go real fast.

shut up fattyApril 11, 2002 at 01:31 · reply

shut up fatso

the person defending SUVs should die.

maybe they should take their spotless white SUV and drive around the bed bath and beyond parking lot until the understand how stupid and ugly they are.

Also they can haul some decorative pillows in their 9000 sqaure feet of vehicle.

at the end of the foglights rant, you said: “drive safely.” i put my foglights on in the daytime to make sure other drivers can see me well. so i use them FOR MY SAFETY, since i have a pretty compact car. i guess you didn’t think of that… and a lot of new cars come with DAYTIME RUNNING LIGHTS which are for use in the DAYTIME. guess you missed that one too. huh. keep an eye out for my foglights because i will run you over if i see you. JUST KIDDING! :)

Chris WageApril 24, 2002 at 10:35 · reply

I understand the merits of daytime running lights.

However, foglights are not daytime running lights.

In fact, if you look in to some of the controvery regarding daytime running lights, a lot of people propose that they should be less intense because of the resulting glare that is much worse in the daytime.

Foglights, of course, are much more intense and have a short cutoff, so you aren’t really helping anyone to see you better – you are just providing short-range disorienting glare, which is not very safe.

yes. Nice going. You’re the asshole that ran my father and me off the road when I was 12 and scared the shit out of both of us. Nice going Justin.

We had the Vehicle inspector at a RCMP led meetin last night, and we asked the question why are we allowing people to drive around with fog lamps lit get this the response was

There is no regulation to tell us to tell them to shut the fog lamps off when it there is no fog

We were told that additional driving lamps are supplied on all vehicles, ( short distance) and after market lamps installtions should not be a problem,

From where I come from additional driving lamps must be coordinated with high beam

Fog lamps can be used alone with tail and park and marker lamps or may be used with low beam

But for common sense safety fog lamps must be shut off when the weather is clear

agree with the comments on raised vehicles these pose a mismatch of the bumpers and are dangerous in a crash due to bumper overlapping we measured a 4 by 4 with a lower bumper hieght of 42”

want that in your face ??

and raising the vehicle screws up the steering and handling because of the added hieght and places the liability on the owner?? not the factory and the headlight are murder when they are raised the bumper hieght and headlamps must be maintained as O.E.M. or the lawyers will have a hay day on the owners wallet

i love what you have to say. very staight forward. thank you. you cracked up my whole office in traffic. we are at ft polk, la we are military police. thank you for making our day. appreciate it.

1) Yes there are regulations for how fog lamps are aimed. Read SAE J583 and J2510. 2) There are provisions for Auxilliary Low-beams and Auxilliary High-beams. Read SAE J582 and J581, respectively. 3) Fog lamps are required to be mounted in a height between 305 to 762 mm. 4) Federal regulation is very strict on the light output and areas where that light can be placed. 5) Aftermarket installation of auxilliary lamps is not well regulated in North America, so OEMs cannot do the things that owners are doing. Enforcement is lacking in either knowledge or priority in regulating this. 6) To point 5, if someone has 4’ high mounted 100W fog lamps then yes he is violating the law. If the lamps are mounted over 762 mm (2.5 ft) that is incorrect and also 100W lamps are illegal for road use and are required to covers over those lamps. You can have them, but only for off-road. 7) I guarantee you that no OEM is shipping vehicles with fog lamps that can operate while the High-beams are on. This is illegal. Fog lamps are only suppose to operate when the parking lamps, marker lamps, and tail lamps are illuminated and shut-off automatically when High-beams are switched on. 8) You are correct that Fog lamps are not auxilliary headlights that illuminate the road 100 yards in front…those are called either driving lamps or auxilliary High-beams are are only for use when the High-beams are on. 9) OEMs do have govenors on all cars now, since many years ago. Also, if you were in an accident with a car going 130 MPH then how did you right this article? You would be dead. Don’t issue statements of grandiose fabrication that eliciting emotion for something that most likely didn’t happen. 10) High speeds do not cause road fatalities! Not paying attention, not providing enough time or distance to correct for unforseen events, not properly maintaining your vehicle, not having experience sufficient to control a driving situation, being involved in a misfortunate situation, etc. cause road fatalities. High speeds cause shortened reaction time, higher cornering forces, and violating the law, etc. 11) Just because a Fog lamp has a sharp cutoff pattern does not mean that oncoming traffic cannot see them. There is always some light above the cutoff line and also you can see the illumination of the Fog lamp lens as a marker. Fog lamps work great for extra vehicle identification. 12) Daytime running lights are regulated and are less intense, so there should be no controversy over it. 13) SUVs have there place! That is probably why they are so popular. I do not advocate commuting to work in them everyday with only one occupant, but how do you pick-up and haul a family of kids as well as groceries, and possibly some large items from the local home improvement store? Maybe you have a pick-up for the large items, a van for the kids and their gear, and a compact car for when you have nothing to haul and only a few passengers. Perhaps you personally want to finance all of those vehicles for everyone that does use their SUV.

I think that this is enough points for today…I would of course appreciate it if people put a little bit of thought and research into their statements before they simply write some worthless piece of garbage and publish it for the world to read; spreading more dis-information about things they know nothing about.

Thanks for the information, Erik. Although, I am not sure who you are talking about writing “some worthless piece of garbage”. What are you referring to?

Nothing I’ve read in your comment contradicts anything in my post, save for the mention about fog light regulations, which I specifically asked for clarification on. In any case, you could stand to be a little more civil.

Anyways, your points are all excellent information. A few quibbles:

Just because a Fog lamp has a sharp cutoff pattern does not mean that oncoming traffic cannot see them. There is always some light above the cutoff line and also you can see the illumination of the Fog lamp lens as a marker. Fog lamps work great for extra vehicle identification.

They do, yes, but they at long distances they are not blinding as they are at close proximity. Fog lights are for fog, not vehicle identification. Running lights and headlights are for vehicle identification.

13) SUVs have there place! That is probably why they are so popular. I do not advocate commuting to work in them everyday with only one occupant, but how do you pick-up and haul a family of kids as well as groceries, and possibly some large items from the local home improvement store? Maybe you have a pick-up for the large items, a van for the kids and their gear, and a compact car for when you have nothing to haul and only a few passengers. Perhaps you personally want to finance all of those vehicles for everyone that does use their SUV.

The term “SUV” is a pretty overloaded one, these days. I don’t really have a major beef with the majority of what falls under the “SUV” moniker, but I do have a problem with people buying, say, a 5,000 lb Dodge Ram to, as you say, retrive “large items from the local home improvement store”. It’s a silly expenditure for a rare occurrence, but that’s a personal decision. It’s not one I’d ever make.

My primary beef with most light trucks and SUVs is one of safety, as outlined here.

Somewhere out there, beyond your front door,…………………….is a LIFE!!!! It can be your’s, open the door, move through the opening, pull the door shut behind you and go get a career writing for someone who cares!!!!!!

If I follow your logic I need to turn off my driving lights when I am stationary, ‘cos, you know, they are called ‘driving’ lights. You idiot!! ‘Fog’ lights are for enhancing one’s driving safety and are for use when the driver feels the need for them! You are one of thoses people who toots people for driving with ‘head’ lights on during the day or in rain. I cant believe you have this much spare time. How much ‘Fog’ is needed before one turns them on? Forget it you have no concept of other people’s driving needs. Arrogance is not a substitute for fairness.

I’d just like to point out that that Erik up there who had a lot to say about fog lights isn’t me, the Erik who posts a lot on your blog. Hi!

Brian GappJune 23, 2005 at 14:56 · reply

Government Road Vehicle lighting Regulations 1989 state that:-

Fog lights (front and rear), must not be used so as to be lit at any time other than in conditions of seriously reduced visibility.

Interesting – do you have a refernece for that?

Another_JoeOctober 01, 2005 at 03:40 · reply

Interesting site - found it with Google. Here’s a couple points from Alberta’s regulations:

Not more than 2 auxiliary driving lamps or 2 fog lamps may be mounted on each side of the vertical centre line

Auxiliary driving lamps on a motor vehicle must be used only at the same time the high beams on the headlamps are used

Fog lamps on a motor vehicle must be used only at the same time the low beams on the headlamps are used

A person shall not drive a motor vehicle that has a total of more than 2 auxiliary driving lamps and fog lamps lit at the same time

An auxiliary driving lamp or fog lamp on an unloaded motor vehicle must be adjusted and aimed so that none of the high-intensity portion of the light to the left of centre of the vehicle projects, at a distance of 8 metres (26 feet) ahead, higher than 100 millimetres (4 inches) below the centre of the lamp from which the light is projected

BTW, I’m not from Alberta, but I’m sure it’s not much differant where I am since it would appear that auxilary/fog light regulations where derived from SAE J583. You can read the reg’s here: http://www.canlii.org/ab/la…

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