06-26-2017, 02:06 AM
|
#1 (permalink)
|
Master EcoModder
Join Date: Jun 2017
Location: Scotland
Posts: 654
Thanks: 36
Thanked 137 Times in 101 Posts
|
Speed bumps.
Here in the UK more and more towns and cities are introducing 20 mph limits which are often tightly enforced, either by speed cameras or by speed bumps. Edinburgh, the nearest big city to me, has introduced a 20 mph speed limit for the entire city centre which is being gradually extended further and further out. Eventually only the four main routes into the city will not be 20 mph.
My dilemma is how to drive economically in such conditions. Here in my town many of the speed bumps are quite fierce and even 20 mph is unsettling or risks damaging suspension parts.
They reduce speed in town, but have been proven to increase pollution, as most motorists speed up and slow down between speed bumps. Other than trying to keep as constant a speed as possible, is there any other advice you can give for coping with town driving here in the UK? Luckily my Honda Jazz/Fit is fairly low geared/torquey and I can creep about in 3rd gear for most of the time.
|
|
|
Today
|
|
|
Other popular topics in this forum...
|
|
|
06-26-2017, 09:10 AM
|
#2 (permalink)
|
Focused on MPG
Join Date: Apr 2009
Location: Uphill from the river!
Posts: 434
Thanks: 127
Thanked 128 Times in 102 Posts
|
Pulse and Glide if a manual transmission, when you see it coming up, kill engine, then restart right before your front tires go over it and rinse and repeat!!!
Just a thought I had
__________________
Staying Focus'd on MPG
|
|
|
06-26-2017, 10:30 AM
|
#3 (permalink)
|
Master EcoModder
Join Date: Jun 2017
Location: Scotland
Posts: 654
Thanks: 36
Thanked 137 Times in 101 Posts
|
I more or less do that, though because of the short distances between bumps it isn't really feasible to switch the ignition off between them. On suburban roads they are about 30 - 50 metres apart. It is really just a case of clutch down, over the bump, clutch up, throttle if needed, clutch down and on I go. They are a total pain, and I am always replacing drop links and suspension bushes, irrespective of the car I have.
|
|
|
06-26-2017, 10:39 AM
|
#4 (permalink)
|
Master EcoModder
Join Date: Jun 2009
Location: SC Lowcountry
Posts: 1,796
Thanks: 226
Thanked 1,353 Times in 711 Posts
|
.
Quote:
They are a total pain, and I am always replacing drop links and suspension bushes, irrespective of the car I have.
|
Not if you have one of these...
https://goo.gl/images/qEVp2L
>
|
|
|
06-26-2017, 11:04 AM
|
#5 (permalink)
|
Master EcoModder
Join Date: Jun 2017
Location: Scotland
Posts: 654
Thanks: 36
Thanked 137 Times in 101 Posts
|
You can't coast with the engine off in one of those! Would cope with the speed bumps though.
|
|
|
06-26-2017, 02:30 PM
|
#6 (permalink)
|
It's all about Diesel
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,791
Thanks: 0
Thanked 1,670 Times in 1,488 Posts
|
Speed bumps are a PITA. Anyway, if you can anticipate them and simply take your foot out of throttle and go gliding as further as you can while you approach them, that might help.
|
|
|
06-26-2017, 02:44 PM
|
#7 (permalink)
|
Master EcoModder
Join Date: Sep 2012
Location: Victoria, BC
Posts: 1,747
Thanks: 75
Thanked 576 Times in 426 Posts
|
Perfect scenario for a hybrid...
|
|
|
06-26-2017, 03:37 PM
|
#8 (permalink)
|
Master EcoModder
Join Date: Jun 2008
Location: Utah
Posts: 975
Thanks: 193
Thanked 312 Times in 221 Posts
|
Petition the city to remove the speed bumps or replace them with ones that can be driven over at the speed limit? You can dream, right? :P
|
|
|
06-26-2017, 04:56 PM
|
#9 (permalink)
|
Master EcoModder
Join Date: Jun 2017
Location: Scotland
Posts: 654
Thanks: 36
Thanked 137 Times in 101 Posts
|
Maybe in the US but not in the UK. They would point out that you can drive over them at the speed limit. Only if you don't care about your vehicle. The big motoring organisations and the Green Party have been campaigning to have them removed but their protests fall on deaf ears. And small awards for damages in the UK mean it is not worth suing the local council.
|
|
|
06-26-2017, 05:56 PM
|
#10 (permalink)
|
Eco-ventor
Join Date: Oct 2010
Location: sweden
Posts: 1,642
Thanks: 76
Thanked 709 Times in 450 Posts
|
You have to go slow between them too!
__________________
2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)
|
|
|
|