Talk:Variations in traffic light operation

Yukon reference

Regarding the sentence

    "Yukon Territory signals, currently found only in Whitehorse, are mounted horizontally over the road, and additional signals facing the same direction are sometimes also mounted vertically on the vertical post that supports signal mounts."

Unless I am reading the sentence wrong, traffic lights mounted horizontally over the road as well as vertically on the support post at the same intersection can be found everywhere, not just the Yukon territory! In fact, some of the vertical lights are actually mounted on top of the vertical post to be seen at a distance, especially if the intersection is at the bottom of a hill. --Goldrushcavi 19:10, 10 June 2006 (UTC)[reply]

Yesterday I moved the section formerly titled "Traffic light mounting in Alberta and Yukon" under "Unusual traffic light designs," including the photo example, to the "Mounting" section in "Traffic light," combining it with what was already there. Mapsax 22:31, 3 October 2006 (UTC)[reply]

Sections

This article not only needs more sections, but the mass of information that I have classes as "examples" needs organised in some fashion. It's currently just spewed onto the page.

zoney ♣ talk 21:10, 22 June 2006 (UTC)[reply]

Needs some photos

I think this page is informative, but the provision of photos of the unusual traffic lights alongside the text would be even better. LR4087 05:35, 28 August 2006 (UTC)[reply]

Suggestion of content I can't verify

The City of New York may still have some older two-color (red/green only, no yellow) traffic signals in service. I remember seeing this on the web site http://www.forgotten-ny.com however my company firewall won't seem to let me in there to verify if this is still true. Perhaps someone else can check it out and update this article accordingly? Fjbfour 12:16, 8 December 2006 (UTC)[reply]

Flashing green

In parts of Canada (the Maritime Provinces, Quebec, Ontario and Alberta), a flashing green light has a special meaning. It is only shown in one direction, with the other three directions in a 4-way intersection having a red light. So, then, what does it mean in British Columbia? Quick Google searches indicate it means there is an unoccupied pedestrian crossing. Confirm/deny? Source and add please. SchmuckyTheCat 17:04, 8 January 2007 (UTC)[reply]

Considering I lived in British Columbia for 22-years, I can confirm that this is wholly correct. Do I have a source? No. :: Colin Keigher (Talk) 18:17, 8 January 2007 (UTC)[reply]

Original Research

This whole article probably needs to be scrapped or merged into "Traffic lights", but I put OR on it for starters for the following reasons:

1. There is no objective way to decide what an "unusual" use of a traffic light is

2. If something is an unusual use, it might very well not be labeled as such in the source, meaning that it still can't be objectively included

3. There are lots of statements (see "Flashing yellow arrow" for example) that indicate that statistics were interpreted or other primary sources were used to generate new information... hence, original research

-- 24.131.82.38 06:49, 24 October 2007 (UTC)[reply]

Timers

Taken out and copied here:

"Similarly, in West Germany, there were at one time changing white lights before the colored traffic lights on surface highways, displaying the speed that one must drive from that place to catch a green light and avoid stopping. These may still exist there."

I think there were on a few larger streets and highways, but this is not enough for mentioning. We need more verification on this. Unfortunately, I cannot remember the right name for that system. I haven't seen such electronic signs for some decades anymore. I assume the reason for that was to save gas, because exhausts are less if the car is on the move rather than waiting at a traffic light (where most motorists do not shut off their engines). -- Scriberius (talk) 09:34, 6 January 2008 (UTC) from Germany[reply]

Left turn signals, Dallas phasing, flashing yellow arrows, new MUTCD--Unusual???

I was looking through the proposed Amendments for the New 2009 MUTCD, found here, and (using the "clean text" version) starting on Page 289 it looks like there will be FOUR different displays allowed in the USA for permissive left and right turns (and this is my source for the following):

The "normal" protected/permissive signal that allows the permissive left turn on the green light that is displayed for the adjacent through traffic.
The so-called "Dallas display" that can display a green ball for a permissive movement when the main light is red. (Note that the FHWA's proposed New MUTCD will be discouraging (but not prohibiting) this display for new signals.)
The flashing yellow arrow display that is listed in the article as being installed in Oregon, Michigan, and elsewhere. This will be required in the MUTCD to be either a four-section display or a three-section display with a bi-modal arrow; flashing yellow and steady yellow will be required to be displayed from different signal sections. Also note that the flashing yellow arrow will need to be followed by either a steady green arrow or a steady yellow arrow.
The flashing red arrow, BUT this will only be allowed to be used in special situations requiring a full stop before turning left during the permissive left turn interval. Will operate similar to Michigan's flashing red ball, but using a flashing red arrow instead of a flashing red ball. Also note that the flashing red arrow will need to be followed by either a steady green arrow or a steady yellow arrow; change directly from flashing red to steady red will not be allowed.

For the change from flashing red or yellow arrow to steady yellow arrow, the steady yellow arrow comes on at the same time as the oncoming traffic yellow light, eliminating the yellow trap. Of the four allowed signal displays, only the first kind listed above is susceptible to the yellow trap.

Given that all four of these kinds of signals are (or will be) in the MUTCD, I don't know if any of them can be considered "unusual" in the United States. Then again, if we want to have a worldwide view of the subject of unusual uses of traffic lights, these are signal displays that may or may not be used in places outside the United States, and may be worth including. --Sleckronmich (talk) 04:33, 12 January 2008 (UTC)[reply]

Belisha beacons not mentioned

Its a light that regulated traffic, so its a traffic-light. 89.240.206.60 (talk) 01:35, 8 March 2009 (UTC)[reply]