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running lights on cars and trucks

tomman58
Explorer
Explorer
We have driven the USA many, many times in good weather and bad, day and night. There is one thing that really bothers me while doing what I like ....rving. The thing is the lack of cars and trucks that have running lights on in the daytime. I am not sure but seems like GM is the only one that has daytime lights. Point being while on the roads of our country sometime you need to pass a really slow car or truck. I do it often when I want to do the 55mph speed limit as that is slow enough. The problem is the on coming traffic and visibility.
We all know that passing can be doable but we need all the road we can get. The downside is seeing others coming our way at dusk, early morning, or in rainy weather.
The absence of running lights seems to me to be a real and present safety issue.
What do you think ? Should there be a national law to make people safer? Jus' wondering.
2015 GMC D/A, CC 4x4/ Z71 ,3.73,IBC SLT+
2018 Jayco 338RETS
2 Trek bikes
Honda EU2000i
It must be time to go, the suns out and I've got a full tank of diesel!
We have a granite fireplace hearth! Love to be a little different.
93 REPLIES 93

wilber1
Explorer
Explorer
Bumpyroad wrote:
DrewE wrote:
. Low beam headlights are designed with a horizontal cutoff above which little light is produced, so as to avoid getting light (glare) into the eyes of oncoming drivers. DRLs, of course, are intended primarily to have exactly the opposite effect: they need to be visible to oncoming drivers but don't need to illuminate the roadway.


that doesn't make sense to me. oncoming vehicles with the low beams on are perfectly visible to me. don't want the glare of high beams even at a lower output.
bumpy


They just use the high beam bulb because it is a single filament. DRL mode is less bright than low beam.
"Never trust a man who has not a single redeeming vice" WSC

2011 RAM 3500 SRW
2015 Grand Design Reflection 303RLS

wilber1
Explorer
Explorer
I don't know why anyone would want to deactivate DRL's if they had them. DRL's used to use high beam on a low voltage but most new vehicles are now using LED strips of some sort. My 2011 Ram uses high beams, my son's 2013 has LED's.
"Never trust a man who has not a single redeeming vice" WSC

2011 RAM 3500 SRW
2015 Grand Design Reflection 303RLS

RPreeb
Explorer
Explorer
tomman58 wrote:
We have driven the USA many, many times in good weather and bad, day and night. There is one thing that really bothers me while doing what I like ....rving. The thing is the lack of cars and trucks that have running lights on in the daytime. I am not sure but seems like GM is the only one that has daytime lights. Point being while on the roads of our country sometime you need to pass a really slow car or truck. I do it often when I want to do the 55mph speed limit as that is slow enough. The problem is the on coming traffic and visibility.
We all know that passing can be doable but we need all the road we can get. The downside is seeing others coming our way at dusk, early morning, or in rainy weather.
The absence of running lights seems to me to be a real and present safety issue.
What do you think ? Should there be a national law to make people safer? Jus' wondering.


My 2016 F-150 Super Crew 3.5 EB has DRL. The owner's manual says that they can be deactivated, but I haven't tried to find out how, because I don't see why I'd have a problem with having them on. I also have the switch set on "Auto", and the sensor is pretty sensitive. The regular lights come on even before I would typically notice a need for them. Been a couple of times when driving through intermittent showers and the lights come on and go off as I pass in and out of the storms.

My wife's 2010 Edge does not have DRL, but with the lights on Auto, they still come on well in advance of there being any significant safety issue.
Rick
2016 F-150 XLT 4x4 3.5 EB
2017 Jay Feather X213

Airstreamer67
Explorer
Explorer
Well, on my vehicle, the high beam headlights serve as the DRLs, only they receive lower voltage as DRLs, so are not as bright when used as such.

tomman58
Explorer
Explorer
Airstreamer67 wrote:
QUOTE: "Oh yeah, one more peeve--when the key is turned "off" in certain GM vehicles, the back up/reverse light is illuminated. More than once, I've stopped in a parking lot, unsure if the vehicle is about to back up into the traffic lane."

I bet this poster is observing what happens when an auto tranny car is put into "park" from the "drive" position. To do so, the gears normally must go through a sequence which includes "reverse." When the reverse gear is being passed through, the backup light momentarily illuminates. It has nothing to do with GM.

On another topic, it might be my imagination, but with the increasing use of daytime driving lights, I seem to be noticing more cars with one headlight burned out. I surmise it's due to the fact that the headlights are experiencing more usage hours due to them being used all the time and not just at night.


These are NOT headlghts.
2015 GMC D/A, CC 4x4/ Z71 ,3.73,IBC SLT+
2018 Jayco 338RETS
2 Trek bikes
Honda EU2000i
It must be time to go, the suns out and I've got a full tank of diesel!
We have a granite fireplace hearth! Love to be a little different.

Airstreamer67
Explorer
Explorer
QUOTE: "Oh yeah, one more peeve--when the key is turned "off" in certain GM vehicles, the back up/reverse light is illuminated. More than once, I've stopped in a parking lot, unsure if the vehicle is about to back up into the traffic lane."

I bet this poster is observing what happens when an auto tranny car is put into "park" from the "drive" position. To do so, the gears normally must go through a sequence which includes "reverse." When the reverse gear is being passed through, the backup light momentarily illuminates. It has nothing to do with GM.

On another topic, it might be my imagination, but with the increasing use of daytime driving lights, I seem to be noticing more cars with one headlight burned out. I surmise it's due to the fact that the headlights are experiencing more usage hours due to them being used all the time and not just at night.

slickest1
Explorer
Explorer
DrewE wrote:
mich800 wrote:
slickest1 wrote:
All the vehicles I have had here in Canada have had DTRL's |They only come on half as bright as the low beam. The tail lights do not come on which I personally think they should be on as well.


My 2008 F250 was originally a export to Canada so it has the DRL. But at least for this one it is just the regular low beams that come on when the vehicle is put in gear. Not a lower powered light.


While I don't know about your specific truck, usually on vehicles where the headlight bulbs are used for DRLs it's the high beams that are used at reduced power/brightness (either by connecting a resistor in series or by having some sort of a PWM chopper circuit). Low beam headlights are designed with a horizontal cutoff above which little light is produced, so as to avoid getting light (glare) into the eyes of oncoming drivers. DRLs, of course, are intended primarily to have exactly the opposite effect: they need to be visible to oncoming drivers but don't need to illuminate the roadway.


Yes you are right on that. Our 07 trailblazer is that way and apparently the module can go bad and the brights come on full strength and you can't dim them. This happened to my wife one night. The GM dealer said that this does happen from time to time.
1998 Holiday Rambler Imperial 40 ft.
Dennis and Marcie and Pup the Jack Russell

d3500ram
Explorer III
Explorer III
I have DLR's on my 2002 Ford Taurus which are my head light low beams. I have no option of turning them off; they are always on. No separate light fixture for them.

The only thing that my light switch on the dash does is turn on the tail lights and dashboard light.
Sold the TC, previous owner of 2 NorthStar pop-ups & 2 Northstar Arrows...still have the truck:

2005 Dodge 3500 SRW, Qcab long bed, NV-6500, diesel, 4WD, Helwig, 9000XL,
Nitto 285/70/17 Terra Grapplers, Honda eu3000Is, custom overload spring perch spacers.

DrewE
Explorer II
Explorer II
DE88ROX wrote:
tomman58 wrote:
Is it me or are some of you confusing headlights of any type with the running lights that are where you old parking lights were.

As late as yesterday it was late, late duck and a guy in a silver car had no lights on at all, thanks to a superior being looking after me, someone caught him with their lights or I would've made a left right into him.


I have running lights, Head lights, and parking lights.
All vehicles have the latter two. Parking lights (amber/yellow) are whats used for turn signals.

Our are you talking about fog lights?


So many lights in front, and so much confusion about them (understandably so, as they are somewhat more complicated than they seem).

Headlights are pretty obvious; they're bright white lights to illuminate the roadway at night. Headlights of course have high beams and low beams, the latter of which should only (or at least mostly) shine approximately below horizontal.

Parking lights are low-intensity amber or white lights to enable a vehicle to be visible when stopped on the road at night. In practice, they are not very useful on their own, particularly for cars and light trucks, but they are required.

Indicators (turn signals) are bright amber blinky lights to indicate turning or, when operated in tandem, as hazard warning lights. They are brighter than parking lights.

Fog lights are low-mounted, moderately bright white or amber lights intended to provide illumination close to the vehicle in foggy or rainy conditions when the regular (particularly high beam) headlights would glare rather than illuminate. They're usually seen being operated in perfectly fine weather, creating additional glare for other drivers.

Marker lights are the set of five little amber lights along the top of large vehicles that serve to show their height and width.

Daytime running lights are moderately bright white lights that are on when the headlights are off to make the vehicle more visible to others, and are especially valuable at higher latitudes where dusk-like conditions are more prevalent. Daytime running lights may be separate fixtures, or the high beam headlights operated at considerably reduced brightness, or turn signal lamps lit continually, or (less frequently) low-beam headlights on at either full brightness or reduced brightness. The first two are the most common.

In the rear, one has tail lights (low-intensity red lights on when the headlights or parking lights are on), stop lights (higher intensity red lights), indicators (higher intensity red or amber blinky lights), a license plate illumination light (low intensity white), backup lights (moderately bright white lights), a CHMSL ("center high mounted stop light", or third brake light, which I think may not be required for large vehicles), and red marker lights for larger vehicles or trailers. The stop lights and indicators may sometimes be shared.

On the side, one may have marker lights and turn signal repeaters.

All of these are regulated by DOT standards, which specify acceptable colors, brightness, visibility and illumination angles, positioning, etc.

DE88ROX
Explorer
Explorer
tomman58 wrote:
Is it me or are some of you confusing headlights of any type with the running lights that are where you old parking lights were.

As late as yesterday it was late, late duck and a guy in a silver car had no lights on at all, thanks to a superior being looking after me, someone caught him with their lights or I would've made a left right into him.


I have running lights, Head lights, and parking lights.
All vehicles have the latter two. Parking lights (amber/yellow) are whats used for turn signals.

Our are you talking about fog lights?
[COLOR=]TV- 2010 GMC Sierra Z71 EXT. cab
TT- 2012 Starcraft Autumn Ridge235fb

DE88ROX
Explorer
Explorer
Bumpyroad wrote:
DE88ROX wrote:


I haven't had to turn on my truck lights since 2000.


I leave my lights on auto and don't frequently have to change that to on. but unless you leave your lights on 24/7/365 if you don't turn them on what do you do when you enter a stretch of road that requires headlights on? during the day?
bumpy


My DRL's are always on. I have a sensor about the size of small marble that sits in the middle of my dashboard, near the base of the windshield. It detects when its dark enough to warrant my actual headlights. I notice them switching over sometimes when im going through a car wash.

Now my Wifes 2014 Fusion, doesnt have DRL's but it uses the same type of sensor I have in my Sierra that will trigger the headlights when it thinks its dark enough to use them. It doesnt have to be very dark.
[COLOR=]TV- 2010 GMC Sierra Z71 EXT. cab
TT- 2012 Starcraft Autumn Ridge235fb

tomman58
Explorer
Explorer
Is it me or are some of you confusing headlights of any type with the running lights that are where you old parking lights were.

As late as yesterday it was late, late duck and a guy in a silver car had no lights on at all, thanks to a superior being looking after me, someone caught him with their lights or I would've made a left right into him.
2015 GMC D/A, CC 4x4/ Z71 ,3.73,IBC SLT+
2018 Jayco 338RETS
2 Trek bikes
Honda EU2000i
It must be time to go, the suns out and I've got a full tank of diesel!
We have a granite fireplace hearth! Love to be a little different.

Bumpyroad
Explorer
Explorer
DrewE wrote:
. Low beam headlights are designed with a horizontal cutoff above which little light is produced, so as to avoid getting light (glare) into the eyes of oncoming drivers. DRLs, of course, are intended primarily to have exactly the opposite effect: they need to be visible to oncoming drivers but don't need to illuminate the roadway.


that doesn't make sense to me. oncoming vehicles with the low beams on are perfectly visible to me. don't want the glare of high beams even at a lower output.
bumpy

DrewE
Explorer II
Explorer II
mich800 wrote:
slickest1 wrote:
All the vehicles I have had here in Canada have had DTRL's |They only come on half as bright as the low beam. The tail lights do not come on which I personally think they should be on as well.


My 2008 F250 was originally a export to Canada so it has the DRL. But at least for this one it is just the regular low beams that come on when the vehicle is put in gear. Not a lower powered light.


While I don't know about your specific truck, usually on vehicles where the headlight bulbs are used for DRLs it's the high beams that are used at reduced power/brightness (either by connecting a resistor in series or by having some sort of a PWM chopper circuit). Low beam headlights are designed with a horizontal cutoff above which little light is produced, so as to avoid getting light (glare) into the eyes of oncoming drivers. DRLs, of course, are intended primarily to have exactly the opposite effect: they need to be visible to oncoming drivers but don't need to illuminate the roadway.