Safety is the only reason that comes to mind. Police cars used to have a second set of brake lights added, mounted in the rear window long before the 3rd lights came along.
The higher mounting level makes them more visible when cars are bunched up bumper to bumper.
"In 1974, psychologist John Voevodsky tested a small, inexpensive gadget that would eventually make U.S. highways much safer," according to a research article cited on the the American Psychological Association website. "The gadget was a third brake light, mounted in the base of rear windshields so that when drivers pressed their brakes, a triangle of light warned following drivers to slow down."
I would guess because of the low profile of many cars. If you follow one too closely and they hit the brakes, the one in the back window can be seen. Where the conventional brake lights are hidden do to profile differences.
I can recall when motor vehicles didn't have brake light or turn indicators. Some still had mechanical brakes (as distinct from hydraulics) Yep, I'm an oldie. You used to have to be sharp, really on the ball. Hand signals for turns (the driver's window was always wound down) Big trucks had wooden broom handles with plywood hands on the end of 'em. No automatic transmissions either, all manual-gear changes with no synchro on first.
Things are definitely a lot easier now.
by Hesham Ibrahim 9 months ago
Intermittent soft brake pedal, sometimes the brakes are good, sometimes no resistance, why??
by payneman17 6 years ago
What would you like to know about automotive braking systems?I am deciding on what type of automotive hub to do next.
by KKalmes 8 years ago
I have been quoted $890 and $690 for new pads and rotors all around on my 2000 Volvo S40, too much?Has anyone had good experiences with the Midas, Pep Boys, retail/service tire shops?The dealerships are outrageous...
by Josh Makaveli 4 years ago
What do you find worst or irritating on the road while driving?for me the most worst and irritating thing is the HID headlight and stuck behind a slow moving car
by Heather Dumire 16 months ago
My cars reverse lights stay on the entire time the car is on also the random warning lights come onReverse lights stay on. Oil light brake light dash board lights. We were told a battery. The car seemed fine after that and 2 weeks later it's acting up again. Can anyone help?
by cloudrider 2 years ago
Why do people take forever to take off when the light turns green while driving? Its a pet peeve and annoying... Slow reaction? Or, are they waiting for the red light runner?
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