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Some of the diagrams used in the article are actually of signs used in other countries -- especially Japan -- and while correct enough in overall design are, of course, frequently different in detail. One serious discrepancy is that mandatory directional signs in Thailand are of Vienna Convention Type B (and not Type A as in Japan): I've changed the Keep Left sign shown here accordingly. --
Picapica (
talk)
12:19, 19 April 2013 (UTC)reply
Compulsory left turn
I regularly see the confusing sign "compulsory left turn" with white background, red rim and a curved left arrow, but no diagonal red bar. See a (non-free) picture
here. −
Woodstone (
talk)
18:25, 25 January 2017 (UTC)reply
That's a non-standard sign. Correct compulsory left turn signs have a white arrow on a blue background, although it seems even some police departments aren't aware of this. --
Paul_012 (
talk)
11:24, 26 January 2017 (UTC)reply
I know that's the international standard, but I don't remember ever having seen the blue one in Thailand. They always use the white/red one (without diagonal). −
Woodstone (
talk)
18:26, 26 January 2017 (UTC)reply
From what I observe, it seems like the more permanent signs tend to follow the standard, while ad-hoc ones often don't. At any rate, we need a reliable source discussing the fact. The law clearly states that the white on blue is the correct one.
[2] (Though I note that the article currently includes a jumble of signs seemingly both specified by the law and not. Much clean-up appears needed.) --
Paul_012 (
talk)
13:59, 27 January 2017 (UTC)reply
In my view the article should not be based only on the law, but also include common practise in the country. We should describe reality, not the formal state. −
Woodstone (
talk)
08:03, 28 January 2017 (UTC)reply
Of course. I have nothing against that; just pointing out that it'd be more difficult to find reliable sources that document such practices. --
Paul_012 (
talk)
05:03, 29 January 2017 (UTC)reply
Late reply (5 years later): The red-rim round sign was indeed previously correct. The oldest official document I found was a Proclamation of the Traffic Officer dated 31 March 1958.
[4] The blue sign was officially made the standard in 2004.
[5] --
Paul_012 (
talk)
07:29, 2 September 2022 (UTC)reply
A Commons file used on this page has been nominated for deletion
The following Wikimedia Commons file used on this page has been nominated for deletion:
Which right-of-way rule applies at an uncontrolled junction in Thailand? Some people claim that it is priority to the left (which obliges a vehicle driver to give way for every vehicle oncoming from the left - just as a driver must do for vehicles oncoming from the right in most European countries where priority to the right applies).
90.231.234.93 (
talk)
12:05, 1 September 2022 (UTC)reply
That is correct, according to Section 71(1) of the Road Traffic Act, B.E. 2522. Not sure if most motorists actually know this, though. --
Paul_012 (
talk)
07:07, 2 September 2022 (UTC)reply
It seems that vehicle drivers often miss their duty to yield priority for a vehicle oncoming from a road on the left-hand side, mainly at three-way junctions and intersections between a big road and a smaller road. Drivers seem to have tendency to perceive that the bigger road, or the road going straight ahead at a t-junction, is a "priority road".
I personally think it is very unrealistic to have priority to the left/priority to the right at a three-way junction, obliging a vehicle driver to yield for a vehicle oncoming from a sideroad to the left/right.
In some countries, mainly UK and Australia, it's always the T-junction rule applying at a three-way junction, obliging a vehicle driver turning in a t-junction to yield for every vehicle approaching the junction (on the way straight ahead) and, if the driver turns right (in left-hand traffic), for vehicles turning left or (if two drivers both turn right) for the vehicle approaching from the left (and the road going straight ahead at a t-junction is normally also marked as "priority road"). Why doesn't the T-junction rule apply in for example mainland-Europe if it applies in Britain?
90.231.234.93 (
talk)
20:31, 2 September 2022 (UTC)reply
According to Thai law, the priority-to-the-left rule only applies when neither intersecting road is designated as having right-of-way. at T-junctions and intersections between bigger and smaller roads, the ways you describe are usually designated (most often by road markings) as such. --
Paul_012 (
talk)
08:41, 5 September 2022 (UTC)reply