What Dictates Rumble Strips?

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KeithW
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Location: Marton-In-Cleveland North Yorks

Re: What Dictates Rumble Strips?

Post by KeithW »

c2R wrote: Tue Oct 05, 2021 23:35 Such fatigue is well observed - if you've got yellow rumble strips on the approach to every roundabout, and yellow backed warnings on the approach to every junction, dangerous or not, then people will get used to them and they will be less effective where they're actually needed.
In my experience we don't have such an issue away from major roads.

Examples locally:
Stainton Way
https://www.google.co.uk/maps/@54.52606 ... 6656?hl=en

A66 South Bank
https://www.google.co.uk/maps/@54.57892 ... 8192?hl=en

A66 Great Burdon
https://www.google.co.uk/maps/@54.54167 ... 8192?hl=en

A64 Hopgrove where you have just driven many miles down a D2 from A1(M) J44
https://www.google.co.uk/maps/@53.98925 ... 8192?hl=en


Now here is an example with rumble strips on the A174. Here you have just travelled several miles on an NSL HQDC with grade separated junctions, furthermore you are descending a hill. I believe the rumble strips etc ARE justified here.
https://www.google.co.uk/maps/@54.56413 ... 8192?hl=en

The next roundabout is back to normal
https://www.google.co.uk/maps/@54.58249 ... 8192?hl=en

Now for an example where we did have a fatal in 2016
https://www.google.co.uk/maps/@54.55565 ... 8192?hl=en

The driver when straight across and into the wooded area where he couldn't be seen. They found his body in the wreckage a week later.

In my old stamping grounds in South Cambs.
A603/A1198 Roundabout, before it was built there was a flat junction which saw a lot of fatal and serious crashes - no rumble strips etc here.
https://www.google.co.uk/maps/@52.12256 ... 8192?hl=en

Now on the A428 at Caxton Gibbet they do have rumble strips but this is the end of a long run from Felixstowe to the A428/A1 where nary a junction at grade has been seen since Felixstowe.
https://www.google.co.uk/maps/@52.22915 ... 8192?hl=en

A421 at Black Cat - not a rumble strip to be seen.
https://www.google.co.uk/maps/@52.18485 ... 8192?hl=en
Nogger
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Re: What Dictates Rumble Strips?

Post by Nogger »

Red version here. Any idea why?

https://www.google.com/maps/@51.872345, ... 384!8i8192

Go back in street view history and you can see that they used to be yellow along with the original red/orange raised bumps that were there prior to the yellow markings. The red/orange raised bumps on their own pre-date the street view history though.

This roundabout does follow a long run of uninterrupted dual carriageway on the A12 and then A120.
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the cheesecake man
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Re: What Dictates Rumble Strips?

Post by the cheesecake man »

KeithW wrote: Wed Oct 06, 2021 11:54 A421 at Black Cat - not a rumble strip to be seen.
https://www.google.co.uk/maps/@52.18485 ... 8192?hl=en
But it does seem to have a textured surface.
Nogger wrote: Wed Oct 06, 2021 13:03 Red version here. Any idea why?
For the same reason we have red lines instead of yellow lines at the side of roads and bus lanes variously painted red or green, ie if road users don't take enough notice let's try a different colour. Or am I being a cynic again? :rolleyes:
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KeithW
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Location: Marton-In-Cleveland North Yorks

Re: What Dictates Rumble Strips?

Post by KeithW »

the cheesecake man wrote: Wed Oct 06, 2021 13:13
KeithW wrote: Wed Oct 06, 2021 11:54 A421 at Black Cat - not a rumble strip to be seen.
https://www.google.co.uk/maps/@52.18485 ... 8192?hl=en
But it does seem to have a textured surface.
Nogger wrote: Wed Oct 06, 2021 13:03 Red version here. Any idea why?
For the same reason we have red lines instead of yellow lines at the side of roads and bus lanes variously painted red or green, ie if road users don't take enough notice let's try a different colour. Or am I being a cynic again? :rolleyes:
In the case of the Black Cat it has been redone so may times who knows what the thought process was but given its only there on the last 100m or so I wouldnt sweat it. The usual speed when I have gone through it has been closer to walking pace than the NSL and the approaches are well lit anyway.

Once you get into bus lane country thats the local Council anyway and I sometimes wonder if there is any logic other than we have 10,000 litres of <name your colour> paint left - lets use that.

Be grateful you get anything, this is the state of lane marking on Stainton Way.
https://www.google.co.uk/maps/@54.51798 ... 8192?hl=en
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Big L
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Re: What Dictates Rumble Strips?

Post by Big L »

The A41 West Brom Expressway has gained these rumble strips heading westbound towards the "Albion Roundabout" - nowhere near the football ground, it's the first roundabout west of the M5 junction. The strips start after a fraction over 1 mile of 50mph road, pretty much where the limit now drops to 40 when the slip from the A4031 junction joins.
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jnty
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Re: What Dictates Rumble Strips?

Post by jnty »

Big L wrote: Tue Oct 05, 2021 17:36 A different rumble-strip question : why do rumble strips in advance of, say a 30mph village speed limit or a sharp ben, extend across both sides of the road?

I've driven at the speed limit through a village, pass the NSL sign, start accelerating, then berdum berdum berdum berdum.
I've thought about this and one idea I've had is that, depending on the exact positioning, you should always be going at 30mph (or whatever) in both directions at that point. So it's as much to stop you speeding up too early on exit as it is to slow you down on entry.

In reality I assume it really comes from a fear that folk will swerve around them to avoid them like they often do with speed bumps.
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