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post #1 of 50 (permalink) Old 01-15-2004, 01:37 PM Thread Starter
 
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Wow

"If daytime running lights were on all the vehicles in the U.S., we would burn an extra 406 million gallons of gas each year. That's only a couple gallons for each vehicle, but in total it is more than all of the vehicles in the country burn in a day. At $1.50 a gallon, that's $600 million per year. Looking at it another way, an extra 8 billion pounds of Carbon Dioxide would be added to the atmosphere by this law. "

Holy cow!

sorry, this is where i got the quote from, somebody was bored enough to figure out exactly how much gas your car uses extra with DRL.

http://www.howstuffworks.com/question424.htm

Last edited by nate2837; 01-15-2004 at 03:41 PM.
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post #2 of 50 (permalink) Old 01-15-2004, 03:34 PM
 
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I don't really get why lights would cause more fuel consumption.
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post #3 of 50 (permalink) Old 01-15-2004, 03:38 PM Thread Starter
 
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Quote:
Originally posted by Jer_BEAR_bluez
I don't really get why lights would cause more fuel consumption.
This should explain it... http://www.howstuffworks.com/question424.htm
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post #4 of 50 (permalink) Old 01-15-2004, 03:39 PM
 
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Any time you put more load on your alternator (i.e. turning on your headlights) you put more drag on your engine. I'm not saying I buy what nate quoted but there is some validity to the theory...
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post #5 of 50 (permalink) Old 01-15-2004, 03:46 PM
 
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every new car in canada is required to have them
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post #6 of 50 (permalink) Old 01-15-2004, 05:31 PM
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That's not the whole picture and I can't stand tests or claims like that.
Fact is cars with DRL's are less likely to be involved in a collision than a car without DRLs.
This becomes pretty obvious in poor weather when a large percent of drivers refuse to turn on their lights unless it's late at night.
Rain, fog, snow at any hour of the day and I'm driving with lights on.

I'll invest the couple of dollars a year and enjoy being seen and hopefully if the statistics don't lie, avoid a costly collision.

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post #7 of 50 (permalink) Old 01-15-2004, 07:02 PM
 
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Quote:
Originally posted by jfsram
That's not the whole picture and I can't stand tests or claims like that.
Fact is cars with DRL's are less likely to be involved in a collision than a car without DRLs.
This becomes pretty obvious in poor weather when a large percent of drivers refuse to turn on their lights unless it's late at night.
Rain, fog, snow at any hour of the day and I'm driving with lights on.

I'll invest the couple of dollars a year and enjoy being seen and hopefully if the statistics don't lie, avoid a costly collision.

I've also seen idiots who use the DRL at night. The DRLs aren't nearly as bright as regular headlights, but more importantly DRLs are only on the front. So, these idiots who are using their DRLs at night may be seen by oncoming traffic, but if you are behind these idiots, good luck seeing them before it's too late.

Pros and cons to everything.
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post #8 of 50 (permalink) Old 01-15-2004, 07:25 PM
 
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Along with what Warlord is saying. When my friend first bought his Civic with DRL's, he drove around at night without turning his lights on. He did this for like 3 nights before I told him that his lights weren't on when I was following him to some bar. He argued with me that they were on cause he can see, so I made him pull over and look at his taillights. Then I said, it should also be obvious cause he couldn't read his speedo or anything inside. What a tool.

As far as it using up more fuel, to an extent I will agree that the extra load will somewhat use up more gas, however alternators are already making more power than what the battery will take, so there is already a lot of wasted power generated by the alternator that isn't being used. So I think that all DRL's will do is use up some of that power already being wasted.
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post #9 of 50 (permalink) Old 01-15-2004, 08:14 PM
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Quote:
Originally posted by smc1377
As far as it using up more fuel, to an extent I will agree that the extra load will somewhat use up more gas, however alternators are already making more power than what the battery will take, so there is already a lot of wasted power generated by the alternator that isn't being used. So I think that all DRL's will do is use up some of that power already being wasted.
Not true at all. Alternators will take more torque to turn as the load increases. There is no wasted power (except in heat). So as you turn on electrical accesories, the engine has to work harder to spin the crank pulley.

Power usage takes the back seat to safety. The difference is minute, but of course when you multiply anything by entire populations, you are going to get large numbers.

DRLs usually use the high beams, just with a low voltage. So the amount of wattage used comes out to be probably like 60w total. That's equal to one light bulb in your house. It really isn't much.

If you want to save gas, get lighter wheels, toss out all the stuff you don't need, and get an lightened underdrive pulley.

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post #10 of 50 (permalink) Old 01-15-2004, 08:20 PM
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whatever, i know in alot of gm's now they have DRL and the regular lights come on at night automatically, i guess they are trying to fool proof that
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post #11 of 50 (permalink) Old 01-15-2004, 10:14 PM
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Remember, DRL = Insurance di$count folks.

Doesn't help with the 8Bil Lbs carbon dioxide issue though.
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post #12 of 50 (permalink) Old 01-15-2004, 10:17 PM
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I get an insurance discount for DRL's???????? Damn, where do I sign?

Anyways..........to keep people from forgetting to turn their lights on at night I hearby suggest that EVERYONE ON THIS SITE who has not already done it............DO THE AUTO-HEADLIGHT SWITCH MOD!



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post #13 of 50 (permalink) Old 01-15-2004, 11:38 PM
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Useless inventions # 12443: Daytime running lights.
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post #14 of 50 (permalink) Old 01-16-2004, 02:14 AM
 
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Quote:
Originally posted by hypnos
Not true at all. Alternators will take more torque to turn as the load increases. There is no wasted power (except in heat). So as you turn on electrical accesories, the engine has to work harder to spin the crank pulley.
What I was saying that, under normal conditions, the alternator is already producing more power than it needs to. There is power being wasted in heat, power that headlights could take advantage of without increasing the load on the alternator.

I agree with your statement. My statement was that alternators already generate more power than a car usually uses under normal load. The wasted power is in heat. Heat is a form of energy, and in this case, it is wasted energy.
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post #15 of 50 (permalink) Old 01-16-2004, 02:35 AM
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Quote:
Originally posted by creepingdeath
Useless inventions # 12443: Daytime running lights.
Same with Airbags, who needs inventions that actually significantly reduce the risk of death or injury?

Quote:
Originally posted by Jus' Trepping
every new car in canada is required to have them
Every 1990 and after model vehicle must have them by law. And Canada isn't the only Country.

On two lane highways, it definitly helps to be seen from a lot further away.

To the Canadians, if you want to drive with the DRL's off, simply install a switch on the parking brake that shorts the wire. This will make the car think the parking brake is applied, and when the parking brake is applied, the DRL's are off.

DRL's are usually the high-beams, but dimmed, some companys (like Ford) sometimes use the regular low-beam lamps (with no dimming), and others (like on Chrysler and GM Minivans) use the parking lights. I think for the estimations made by howstuffworks, they assumed that all car manufactures use the low-beam lamps without dimming (regular headlights).

Even if I do waste the extra gas, it only comes out to $3 - $5 a year. I say this is pretty damn good insurance.

Quote:
Originally posted by smc1377
Along with what Warlord is saying. When my friend first bought his Civic with DRL's, he drove around at night without turning his lights on. He did this for like 3 nights before I told him that his lights weren't on when I was following him to some bar. He argued with me that they were on cause he can see, so I made him pull over and look at his taillights. Then I said, it should also be obvious cause he couldn't read his speedo or anything inside. What a tool.
No. Tools are smarter. You're friend should be castrated for the sake of the human race. (I can't believe idiots like this are even allowed on the road, let alone remember to breathe).

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