Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > General Discussions > Off-Topic Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-26-2011, 09:55 PM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,797
flashing red light

What's the deal with flashing red lights at an intersection? If there's power to flash the lights, can't they run a programmed cycle instead? Flashing red lights don't work at an intersection with 3 ahead lanes and 2 left turn lanes in each direction, particularly during rush hour.

Sixto
87 300D

Reply With Quote
  #2  
Old 10-26-2011, 09:58 PM
KarTek's Avatar
<- Ryuko of Kill La Kill
 
Join Date: Jun 2007
Location: Bahama/Eno Twp, NC
Posts: 3,258
I think sometimes the lights program hits a glitch and it sends them into flash mode.
__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250
Reply With Quote
  #3  
Old 10-27-2011, 12:57 AM
compress ignite's Avatar
Drone aspiring to Serfdom
 
Join Date: Feb 2004
Location: 32(degrees) North by 81(degrees) West
Posts: 5,554
Insurance Company Bribing Signal Electricians?

Here when the lights start "Flashing" one directions is Yellow and the other is RED.[I.E. "Caution" V.S. "STOP"] (You Got It, MULTIPLE CRASHES!)
OR at some intersections ALL four Directions are RED.(Same,Same, Multiple Crashes)
The LEOs come along and put SawHorses,With STOP signs hung on them in
the Middle of the Intersection.(Same.Same,Multiple Crashes)

Occasionally,a suicidal LEO will stand in the Middle of one of these intersections. (Again,You Got It...They Hit the Cop.) But only once!

There is something about the act of Cellphoning whilst driving that make Humans BLIND!
__________________
'84 300SD sold
124.128
Reply With Quote
  #4  
Old 10-27-2011, 08:57 AM
elchivito's Avatar
ĦAy Jodido!
 
Join Date: Aug 2009
Location: Rancho Disparates
Posts: 4,075
Quote:
Originally Posted by compress ignite View Post
Here when the lights start "Flashing" one directions is Yellow and the other is RED.[I.E. "Caution" V.S. "STOP"] (You Got It, MULTIPLE CRASHES!)
OR at some intersections ALL four Directions are RED.(Same,Same, Multiple Crashes)
The LEOs come along and put SawHorses,With STOP signs hung on them in
the Middle of the Intersection.(Same.Same,Multiple Crashes)

Occasionally,a suicidal LEO will stand in the Middle of one of these intersections. (Again,You Got It...They Hit the Cop.) But only once!

There is something about the act of Cellphoning whilst driving that make Humans BLIND!
Around here, red means stop unless you can get away with not stopping and yellow means go really fast.
__________________
You're a daisy if you do.
__________________________________
84 Euro 240D 4spd. 220.5k sold
04 Honda Element AWD
1985 F150 XLT 4x4, 351W with 270k miles, hay hauler
1997 Suzuki Sidekick 4x4
1993 Toyota 4wd Pickup 226K and counting
Reply With Quote
  #5  
Old 10-27-2011, 11:14 AM
G-Benz's Avatar
Razorback Soccer Dad
 
Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
Quote:
Originally Posted by KarTek View Post
I think sometimes the lights program hits a glitch and it sends them into flash mode.
True.

I have also seen traffic lights go into that mode (where magnetic loops at intersections are absent) late at night when traffic is deemed abyssmal...
__________________
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
Reply With Quote
  #6  
Old 10-27-2011, 11:23 AM
Posting since Jan 2000
 
Join Date: Sep 2011
Posts: 5,652
I expect this is due to the mostly antiquated controls that they use for traffic lights. They typically use PLC's while there is enough market that some inexpensive dedicated controllers would seem to be marketable.
__________________
2 Thessalonians 3:10, Galatians 4:16
Reply With Quote
  #7  
Old 10-28-2011, 01:13 AM
Registered User
 
Join Date: May 2011
Location: NYC
Posts: 5,504
Quote:
Originally Posted by LarryBible View Post
I expect this is due to the mostly antiquated controls that they use for traffic lights. They typically use PLC's while there is enough market that some inexpensive dedicated controllers would seem to be marketable.
If that -- some cabinets I've seen contain some sort of rotating drum/timer device and a few relays. All mechanical, not a PLC or microcontroller in sight.
Reply With Quote
  #8  
Old 10-28-2011, 01:14 AM
Registered User
 
Join Date: May 2011
Location: NYC
Posts: 5,504
Quote:
Originally Posted by G-Benz View Post
True.

I have also seen traffic lights go into that mode (where magnetic loops at intersections are absent) late at night when traffic is deemed abyssmal...
You mean ... infinitesimal?
Reply With Quote
  #9  
Old 10-29-2011, 09:53 PM
Yak Yak is offline
Registered User
 
Join Date: Aug 2009
Location: San Antonio, TX
Posts: 1,711
Quote:
Originally Posted by sixto View Post
What's the deal with flashing red lights at an intersection? If there's power to flash the lights, can't they run a programmed cycle instead? Flashing red lights don't work at an intersection with 3 ahead lanes and 2 left turn lanes in each direction, particularly during rush hour.

Sixto
87 300D
I presume you mean after a storm or power failure and they flash red in all directions.

Yeah, I know what you mean. Suddenly you have a four-way stop with five lanes in each direction. Who has right-of-way? Wait...it's my turn...damn guy turning left...no...go go go go!...inch forward inch forward...100 yards, repeat at next intersection...
Reply With Quote
  #10  
Old 10-30-2011, 10:02 PM
Registered User
 
Join Date: Dec 2007
Location: NorCal
Posts: 1,332
Four way stops are so damned confusing

Around here they send certain low traffic intersections into flashing yellow/red after about 12pm. Sure makes it easy to spot the drunks.
__________________
http://i193.photobucket.com/albums/z...-RESIZED-1.jpg
1991 300E - 212K and rising fast...
Reply With Quote
  #11  
Old 10-31-2011, 07:17 PM
Yak Yak is offline
Registered User
 
Join Date: Aug 2009
Location: San Antonio, TX
Posts: 1,711
Quote:
Originally Posted by JohnM. View Post
Four way stops are so damned confusing

Around here they send certain low traffic intersections into flashing yellow/red after about 12pm. Sure makes it easy to spot the drunks.
A regular planned 4-way is nothing, it's the craziness of people not waiting or not going because they're waiting and then going when you don't expect them to when the lights are all suddenly blinking red. Even a red/yellow would be easier.

Two lanes - easy; three lanes - OK; five lanes, with one of them a left/straight like the OP described -- good luck.

And believe it or not, the vaunted trained German drivers don't know how to use 4-way stops. They complained about them in their visits to the US for flight training. In Germany they have the "priority road" so the "main road" doesn't stop even if it's a left or right turn. A four-way stop intersection makes no sense to them.
Reply With Quote
  #12  
Old 11-01-2011, 04:03 PM
G-Benz's Avatar
Razorback Soccer Dad
 
Join Date: Apr 2001
Location: Dallas/Fort-Worth
Posts: 5,711
Quote:
Originally Posted by Yak View Post
...And believe it or not, the vaunted trained German drivers don't know how to use 4-way stops...
And on that subject, Europeans are comfortable with "roundabouts" which seem to be an option over traffic lights in some busy intersections.

We have a few here (albeit single-lane negotiating), and it was hilarious to watch newbies try to figure out the whole affair! Fast forward a couple of years, and those same roundabouts have turned into games of "chicken"!
__________________
2009 ML350 (106K) - Family vehicle
2001 CLK430 Cabriolet (80K) - Wife's car
2005 BMW 645CI (138K) - My daily driver
2016 Mustang (32K) - Daughter's car
Reply With Quote
  #13  
Old 11-01-2011, 04:37 PM
Registered User
 
Join Date: Apr 2003
Location: Phoenix Arizona. Ex Durban R.S.A.
Posts: 3,880
Quote:
Originally Posted by G-Benz View Post
And on that subject, Europeans are comfortable with "roundabouts" which seem to be an option over traffic lights in some busy intersections.
I loathe roundabouts.

- Peter.

__________________
81 240D stick. 316000 miles at purchase. 342000 now
2000 GMC Sonoma
Formerly...
2002 Kia Rio. Worst crap on four wheels
1981 240D 4spd stick. 389000 miles. Deceased Jan 08
1984 123 200
1979 116 280S
1972 Cadillac Sedan DeVille
1971 108 280S
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 08:28 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page