On 25/09/2024 22:24, Tom Hughes via Talk-GB wrote:
On 25/09/2024 21:44, Chris Pankhurst via Talk-GB wrote:
I am looking at a junction in London where I am not clear whether a u-
turn is allowed or not. The location the junction between Edgeware
Road and Praed Street and Chapel Street traveling from NW din a SE
direction.
There is straight ahead arrow on the right lane and there is no right
turn sign at the junction. Also there is no no u-turn sign there and
OSM does not have a No U Turn Relation on the approach way so
implying u-turns are allowed here.
The question I have is can you make a u-turn on Edgeware Road to come
back on Edgeware road in a NW direction: from 51.5193824, -0.1691434
to 51.5193073, -0.1692058 and hence OSM is correct?
Absent a sign prohibiting it then it's probably allowed when there's
a full green on the lights. It's just possible all the greens have
filter arrows which might effectively prohibit it.
Looking at it more closely the right turn prohibition is an
interesting wrinkle - as far as I can tell that does not extend
to u-turns but it's obviously odd to allow them while not
allowing right turns and it's another reason nobody will be
expecting you to try it.
The box junction also creates a fun issue in that you can't
enter it until your exit is clear, except if you are turning
right and need to wait for a gap in oncoming traffic, but as
far as I can see that exemption does not extend to u-turns.
So I guess it comes down to whether a u-turn is a specific
type of right turn? But I've found nothing to say either way.
There is actually very little mention of u-turns in the highway
code that I can find either in the current web version or my
old paper copy - really just the no u-turns sign in the signs
section is all I've found.
My 1979 edition of Driving has a paragraph on them but it just
says they're not allowed on motorways, one way roads or where
there is an explicit sign.
Tom
--
Tom Hughes ([email protected])
http://compton.nu/
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