20mph speed limit/speed bump galore
20mph speed limit/speed bump galore
Author
Discussion

winther

Original Poster:

238 posts

241 months

Monday 2nd March 2020
quotequote all
Sorry of this is a repost...
From one weekend to the next central London has a blanket 20mph speed limit imposed and loads of added speed bumps particularly along the embankment - going west, this was one of the last remaining London stretches of roads where traffic was moving ok thanks to the dual lane (East was destroyed with the cycling highway and is now a complete utter nightmare at all times).
Was there any announcement about this? Any explanation of how this will improve London traffic? They declared war on motorists a while ago with the cycling revolution - why not go all out and impose a 5mph limit? If we don't like it we can just "get on our bikes".

And btw, if the environment and air quality in London is a concern, why make changes which grind traffic to a halt and causes a journey to take 3x longer?
Also, isn't the constant stop/accellerate caused by speedbumps and lower speed with a 20mph limit resulting in more traffic buildup and worse fuel economy for cars?

RSTurboPaul

13,090 posts

287 months

Monday 2nd March 2020
quotequote all
Don't forget the Met are ramping up enforcement, with the aim of increasing tickets from 160k to 1m per year.

Because, you know, 20mph at 3am on an empty road is super-dangerous.

braddo

12,301 posts

217 months

Monday 2nd March 2020
quotequote all
winther said:
And btw, if the environment and air quality in London is a concern, why make changes which grind traffic to a halt and causes a journey to take 3x longer?
Also, isn't the constant stop/accellerate caused by speedbumps and lower speed with a 20mph limit resulting in more traffic buildup and worse fuel economy for cars?
Lucky most cars and vans have stop/start these days so gridlocked traffic emits a lot less than it used to.

For all we know, the 20mph limits might to reduce the concertina effect, resulting in less traffic buildup and better fuel economy. the amount of slowing and acceleration over speedbumps is obviously reduced if vehicles are going no more than 20mph.


Dave Hedgehog

16,331 posts

233 months

Monday 2nd March 2020
quotequote all
winther said:
And btw, if the environment and air quality in London is a concern, why make changes which grind traffic to a halt and causes a journey to take 3x longer?
Also, isn't the constant stop/accellerate caused by speedbumps and lower speed with a 20mph limit resulting in more traffic buildup and worse fuel economy for cars?
The government produced a scientific report showing how speedbumps drastically increase pollution and advised authorities not to fit any more

Khan the mouth breathers response ? Double the number installed in london over 5 years and then complain about air quality


InitialDave

15,096 posts

148 months

Monday 2nd March 2020
quotequote all
braddo said:
Lucky most cars and vans have stop/start these days so gridlocked traffic emits a lot less than it used to.

For all we know, the 20mph limits might to reduce the concertina effect, resulting in less traffic buildup and better fuel economy. the amount of slowing and acceleration over speedbumps is obviously reduced if vehicles are going no more than 20mph.

Depends on how well designed the speed humps are, there's some truly vicious ones near me I need to take almost at walking pace, others are more sensible.

ZX10R NIN

30,552 posts

154 months

Monday 2nd March 2020
quotequote all
The Met are expecting a 30% increase in speeding fines so the Government will be happy.

kambites

71,471 posts

250 months

Monday 2nd March 2020
quotequote all
winther said:
And btw, if the environment and air quality in London is a concern, why make changes which grind traffic to a halt and causes a journey to take 3x longer?
I'm sure you actually know the answer to this, which is that the idea of the changes it to discourage people from driving at all. Whether it works or not is another matter...

winther

Original Poster:

238 posts

241 months

Monday 2nd March 2020
quotequote all
kambites said:
I'm sure you actually know the answer to this, which is that the idea of the changes it to discourage people from driving at all. Whether it works or not is another matter...
I don't think so - if you routinely drive through London during rush hour/pay the congestion charge, it's because you are dependent on a vehicle. Like myself when I am transporting equipment for a photoshoot. Most people jumping on the bike are people who used to commute on public transport. Ask around the office - how many of your cyclist colleagues used to drive their own vehicle to work rather than using the tube?

"It's clear the new 20mph speed limits will not only save lives but will also encourage Londoners to travel in more active and sustainable ways."
Translation - "if we suffocate traffic even further, people will jump on their bikes."

Edited by winther on Monday 2nd March 15:25

winther

Original Poster:

238 posts

241 months

Monday 2nd March 2020
quotequote all
braddo said:
winther said:
And btw, if the environment and air quality in London is a concern, why make changes which grind traffic to a halt and causes a journey to take 3x longer?
Also, isn't the constant stop/accellerate caused by speedbumps and lower speed with a 20mph limit resulting in more traffic buildup and worse fuel economy for cars?
Lucky most cars and vans have stop/start these days so gridlocked traffic emits a lot less than it used to.

For all we know, the 20mph limits might to reduce the concertina effect, resulting in less traffic buildup and better fuel economy. the amount of slowing and acceleration over speedbumps is obviously reduced if vehicles are going no more than 20mph.

If keeping the traffic moving was even a slight consideration, they would not have sacrificed dual lanes on the main roads through London. I used to be able to drive from Victoria to Canary Wharf on a Sunday night in 30 minutes. It now takes me 1 hour if I'm lucky, purely due to the embankment/Upper Thames st being one lane, and people trying to avoid this stretch are clogging up all other routes.
No, the speed limit/speed bumps are all about profit. These days it is perfectly fine to sh*t on motorists as long as you back it up with a "green"/safety argument.

"It's clear the new 20mph speed limits will not only save lives but will also encourage Londoners to travel in more active and sustainable ways."

Again, they know most people who regularly make their way through London by car do it because they need their vehicle - but with the green argument they can hide their true intent which is profit.


Edited by winther on Monday 2nd March 15:28


Edited by winther on Monday 2nd March 15:29

Vickers_VC10

6,759 posts

234 months

Monday 2nd March 2020
quotequote all
winther said:
If keeping the traffic moving was even a slight consideration, they would not have sacrificed dual lanes on the main roads through London. I used to be able to drive from Victoria to Canary Wharf on a Sunday night in 30 minutes. It now takes me 1 hour if I'm lucky, purely due to the embankment/Upper Thames st being one lane, and people trying to avoid this stretch are clogging up all other routes.
No, the speed limit/speed bumps are all about profit. These days it is perfectly fine to sh*t on motorists as long as you back it up with a "green"/safety argument.

"It's clear the new 20mph speed limits will not only save lives but will also encourage Londoners to travel in more active and sustainable ways."

Again, they know most people who regularly make their way through London by car do it because they need their vehicle - but with the green argument they can hide their true intent which is profit.


Edited by winther on Monday 2nd March 15:28


Edited by winther on Monday 2nd March 15:29
As been proven by either colour government in recent times they literally don't care about your concerns or whether or not this will effect your life or personal mental health etc The air being clean out trumps your complaints. Suck it up or go elsewhere would be my advice. London is a sthole anyway .

768

20,678 posts

125 months

Monday 2nd March 2020
quotequote all
InitialDave said:
braddo said:
Lucky most cars and vans have stop/start these days so gridlocked traffic emits a lot less than it used to.

For all we know, the 20mph limits might to reduce the concertina effect, resulting in less traffic buildup and better fuel economy. the amount of slowing and acceleration over speedbumps is obviously reduced if vehicles are going no more than 20mph.

Depends on how well designed the speed humps are, there's some truly vicious ones near me I need to take almost at walking pace, others are more sensible.
The ones near me looked badly designed the first time round, but at this time of year there are massive potholes at the edges. Like this, but worse:



I end up crawling over them, then ragging it to the next one.

winther

Original Poster:

238 posts

241 months

Monday 2nd March 2020
quotequote all
Vickers_VC10 said:
winther said:
If keeping the traffic moving was even a slight consideration, they would not have sacrificed dual lanes on the main roads through London. I used to be able to drive from Victoria to Canary Wharf on a Sunday night in 30 minutes. It now takes me 1 hour if I'm lucky, purely due to the embankment/Upper Thames st being one lane, and people trying to avoid this stretch are clogging up all other routes.
No, the speed limit/speed bumps are all about profit. These days it is perfectly fine to sh*t on motorists as long as you back it up with a "green"/safety argument.

"It's clear the new 20mph speed limits will not only save lives but will also encourage Londoners to travel in more active and sustainable ways."

Again, they know most people who regularly make their way through London by car do it because they need their vehicle - but with the green argument they can hide their true intent which is profit.


Edited by winther on Monday 2nd March 15:28



Edited by winther on Monday 2nd March 15:29
As been proven by either colour government in recent times they literally don't care about your concerns or whether or not this will effect your life or personal mental health etc The air being clean out trumps your complaints. Suck it up or go elsewhere would be my advice. London is a sthole anyway .
I would argue that the air is not being improved when traffic is suffocated by less road space and more speed bumps. As I said, people who need their cars will continue using them. The idea we just pull out our bikes instead is the argument a 5-year old might make.
But no - of course they are not going to listen to motorists when their aim is to make driving our cars so inconvenient that we are forced to find alternatives. I think they underestimated how much motorists needing their vehicles are willing to accept before abandoning the idea of driving. Streets are still packed, but moving even slower thanks to their initiatives.
I live and work in Canary Wharf, so thankfully don't commute. Although it's not far from a proper sthole/ghetto this particular area is pretty nice.
I do have to drive to various jobs sometimes, often with lots of equipment. Not sure what bike would be suitable riding from Canary Wharf to Surrey with 10K worth of tripods/cameras etc, but guess I need to figure this out soon.

ZX10R NIN

30,552 posts

154 months

Monday 2nd March 2020
quotequote all
TFL is on record admitting that the 20mph limit does make the air quality worse as all cars are inefficient at that speed but they're saying that it's to save (& it has nothing to do with the fact that the trial cameras were struggling to pick up every car when travelling at 30mph) people from more severe injuries at 30mph, when it was pointed out that crossing zones on every road would be a simple solution they declined to comment. biglaugh think of the children

Mr Tidy

31,428 posts

156 months

Tuesday 3rd March 2020
quotequote all
It isn't just Central London, my mother's flat is in Worcester Park (London Borough of Sutton) and her road has had a 20 mph limit for about 20 years!

But thankfully within 4 or 5 miles I can get into Surrey on the A3 - even if parts of that have a 50mph limit until I get past the Ace of Spades.
Although back in the 70s/80s it had an N/S/L of 70 even for 60s bangers like my Mk2 Cortina, which was nowhere near as capable as my current cars. confused

Anyway this is an example of what is in Green Lane, Worcester Park.


gazza285

11,149 posts

237 months

Tuesday 3rd March 2020
quotequote all
winther said:
Not sure what bike would be suitable riding from Canary Wharf to Surrey with 10K worth of tripods/cameras etc, but guess I need to figure this out soon.
Electric assisted cargo bike.


mgv8

1,657 posts

300 months

Tuesday 3rd March 2020
quotequote all

Ken Figenus

6,011 posts

146 months

Tuesday 3rd March 2020
quotequote all
From TFL's report themselves: Cars pollute twice as much at 10mph than they do at 20mph.



I cycled daily in London for well over 10 years - it worked well for me. But, is the notion that most people for whom cycling to work is realistic and practical mostly already do so? Is this chase to make cycling more attractive at the expense of stifling buses and other vehicles actually worthy or a bit self-defeating? I accept it is a bit different outside London where tokenistic cycle lanes are often a hazard in themselves and much improvement is needed - but NOT by creating more pollution and driving people off buses as journey times get so slow.

heebeegeetee

30,142 posts

277 months

Tuesday 3rd March 2020
quotequote all
Vickers_VC10 said:
As been proven by either colour government in recent times they literally don't care about your concerns or whether or not this will effect your life or personal mental health etc The air being clean out trumps your complaints.
Yeah I get that, which makes the use of speed bumps baffling as they have been proven to increase pollution.

Mr_Megalomaniac

1,275 posts

95 months

Tuesday 3rd March 2020
quotequote all
RSTurboPaul said:
increasing tickets from 160k to 1m per year.
I frankly wouldn't mind, as long as they targeted the red light jumpers, roundabout fiends, mouth-breathers who turn across oncoming traffic lanes, self-indulgent c*&%s who don't indicate and so forth...
Unfortunately I fear you are correct - they won't touch a single one of the ones I've mentioned and will instead do you in for going 24mph on a clear road in the dry.

oyster

13,733 posts

277 months

Tuesday 3rd March 2020
quotequote all
winther said:
Sorry of this is a repost...
From one weekend to the next central London has a blanket 20mph speed limit imposed and loads of added speed bumps particularly along the embankment - going west, this was one of the last remaining London stretches of roads where traffic was moving ok thanks to the dual lane (East was destroyed with the cycling highway and is now a complete utter nightmare at all times).
Was there any announcement about this? Any explanation of how this will improve London traffic? They declared war on motorists a while ago with the cycling revolution - why not go all out and impose a 5mph limit? If we don't like it we can just "get on our bikes".

And btw, if the environment and air quality in London is a concern, why make changes which grind traffic to a halt and causes a journey to take 3x longer?
Also, isn't the constant stop/accellerate caused by speedbumps and lower speed with a 20mph limit resulting in more traffic buildup and worse fuel economy for cars?
I'd love to know when you can drive along the Embankment and don't have to wait at least 2 cycles to clear any set of lights. You could drive at the aforementioned 5mph along there and still have no effect on your A to B journey time.

I'm all ears as to how you suggest this change will make journeys 3 x longer.