03-26-2019, 12:31 AM
|
#1 (permalink)
|
EcoModding Lurker
Join Date: Oct 2015
Location: CA
Posts: 31
Thanks: 1
Thanked 3 Times in 3 Posts
|
Advice on rolling stops or full stops
In the last month or so I have doubled down on my---well its not really hypermiling, because I don't do all the dozens of tips listed at the 100 tips link at the top, but I was able to get 26.1 on an out of town freeway trip, in a new to me 2006 Highlander Hybrid, when the adjusted freeway EPA MPG was 25. So I am doing well in remedial Hypermiling 101.
At any rate, I have noticed in the last month, that I've also been doing a lot more of what I call the California Rolling Stop, instead of a full stop at a sign.
What is the experience & advice of people here? Do you folks do this, or do you come to a full stop, even when there is nobody there? Or do you work on a compromise, like a full stop for a split second, before moving on? I don't know if that would require any less gas, than emerging from a full stop for 3 full seconds, which is how I learned to stop in drivers ed way back when.
|
|
|
Today
|
|
|
Other popular topics in this forum...
|
|
|
03-26-2019, 02:57 AM
|
#2 (permalink)
|
Master procastinator
Join Date: Apr 2017
Location: Panelia, Finland
Posts: 273
Thanks: 103
Thanked 49 Times in 42 Posts
|
A stop sign is a stop sign. It's there for a reason.
In my opinion, safety goes before saving a drop or two of fuel.
Last edited by iikhod; 03-26-2019 at 02:58 AM..
Reason: Corrected typo
|
|
|
03-26-2019, 05:58 AM
|
#3 (permalink)
|
(:
Join Date: Jan 2008
Location: up north
Posts: 12,762
Thanks: 1,585
Thanked 3,555 Times in 2,218 Posts
|
I roll when I'm in the middle of nowhere. YMMV
|
|
|
03-26-2019, 08:36 AM
|
#4 (permalink)
|
Corporate imperialist
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,267
Thanks: 273
Thanked 3,569 Times in 2,833 Posts
|
How much does a ticket for running a stop sign cost?
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|
|
|
The Following User Says Thank You to oil pan 4 For This Useful Post:
|
|
03-26-2019, 08:48 AM
|
#5 (permalink)
|
(:
Join Date: Jan 2008
Location: up north
Posts: 12,762
Thanks: 1,585
Thanked 3,555 Times in 2,218 Posts
|
Never got one. I dunno.
|
|
|
03-26-2019, 11:57 AM
|
#6 (permalink)
|
Human Environmentalist
Join Date: Aug 2010
Location: Oregon
Posts: 12,803
Thanks: 4,326
Thanked 4,476 Times in 3,441 Posts
|
Unless your rolling stop is at 15 miles per hour, it's not going to save that much fuel. Do I rolling stop? Perhaps very slightly sometimes but I'm very nearly stopped, and that's more to do with not wanting the full "jerk" of stopping and to save a second, not to save fuel.
If you've got a hybrid it's already recapturing some of that stopping energy.
Failing to obey a traffic control device (stop sign) is a hefty ticket compared to speeding, and is seen as way more serious.
|
|
|
03-26-2019, 12:23 PM
|
#7 (permalink)
|
Rat Racer
Join Date: May 2011
Location: Route 16
Posts: 4,150
Thanks: 1,784
Thanked 1,922 Times in 1,246 Posts
|
If my engine's running I'd rather come up from 1 than from zero.
A nearly compliant rolling stop is a good, solid deceleration to the line with an extra push on the brake at the line to give the car more decel and a dip. With the dip it noses down and rocks back. At a low enough speed it looks good and conserves half a smidgen of momentum.
If my engine's off, I bump start as part of coming to a halt, give the engine half a moment to realize it's awake and then move on.
__________________
Quote:
Originally Posted by sheepdog44
Transmission type Efficiency
Manual neutral engine off.100% @∞MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%
|
|
|
|
03-26-2019, 01:56 PM
|
#8 (permalink)
|
Master EcoModder
Join Date: Feb 2018
Location: VA
Posts: 1,372
Thanks: 324
Thanked 483 Times in 368 Posts
|
If I can conserve enough momentum to stay out of 1st gear at intersections without dropping the RPMs below idle, gas is saved. Seems pretty simple.
__________________
2013 Toyota Prius C 2 (my car)
2015 Mazda 3 iTouring Hatchback w/ Tech Package (wife's car)
|
|
|
The Following User Says Thank You to mpg_numbers_guy For This Useful Post:
|
|
03-26-2019, 06:01 PM
|
#9 (permalink)
|
EcoModding flying lizard
Join Date: May 2012
Location: Georgia
Posts: 743
Thanks: 618
Thanked 264 Times in 176 Posts
|
I almost always come to a full stop. Only times I skip it are when people are racing up behind me, threatening to rear end me. I'll pull away about 3/4 of a second after stopping. If you stop and wait for 3 seconds people here in Georgia will honk the **** out of you and/or crash into you.
It definitely doesn't help my mileage having to get the 3300 lbs rolling from 0, but it does help in not getting tickets. You never know when a cop may be watching. 0 tickets in 6 years and counting. I have had police threaten to throw me in jail, and falsely accuse me of "stopping traffic and drag racing" when I had a motorcycle break down on a road without a pulloff, but that is a little different...
__________________
-Kaze o tatakaimasen-
Best trip in V6: 52.0
Best tank in V6: 46.0
Best tank in Mazda: 49.9
Best tank in CBR: 61.3
Best tank in SV: 83.9
Quote:
Originally Posted by MetroMPG
You can lead a fashion-conscious horse to unusual-looking water...
|
Last edited by Daschicken; 03-26-2019 at 06:08 PM..
|
|
|
03-26-2019, 07:27 PM
|
#10 (permalink)
|
Rat Racer
Join Date: May 2011
Location: Route 16
Posts: 4,150
Thanks: 1,784
Thanked 1,922 Times in 1,246 Posts
|
The only time I got tagged was when I sawed through a chicane that had a stop sign at either end. I was only watching out for safety, not watching out for everywhere that had line of sight on me.
That was not hypermiling and nowhere near a rolling stop. It wasn't quite drifting either, but...
__________________
Quote:
Originally Posted by sheepdog44
Transmission type Efficiency
Manual neutral engine off.100% @∞MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%
|
|
|
|
|