Go Back   EcoModder Forum > EcoModding > Hypermiling / EcoDriver's Ed
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 11-10-2012, 02:10 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Sep 2012
Location: Oakland, CA
Posts: 44

Lincoln - '00 Lincoln Ls
90 day: 24.29 mpg (US)
Thanks: 10
Thanked 3 Times in 2 Posts
New fueleconomy.gov tips

So I was frequenting fueleconomy.gov, and I went to the driving more efficiently section, (even though I've been there more than a dozen times) and I realized that they had changed their guidelines for driving speed. Before they said that every 5 MPH you drive over 60 is another $0.24 per gallon you pay, but they've changed it to 50! Check it out:

Gas Mileage Tips - Driving More Efficiently

That to me is rather significant. Most highways in the US are 65, some ranging up to 80, but it used to be 55. I wonder if they are going to bring the speed limits back down to more fuel efficient speeds, and if they do, it'll be way easier to go 50-55 on the highway than it is now.

Any thoughts?

__________________

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 11-10-2012, 03:35 PM   #2 (permalink)
...beats walking...
 
Join Date: Jul 2009
Location: .
Posts: 6,191
Thanks: 179
Thanked 1,521 Times in 1,122 Posts
Thoughts? Typical Gobberment stupidity! The EPA et.al. are STILL thinking "National Speed-limit" is 55 MPH which is well, stupid!

The EPA fuel economy "estimates" SHOULD (IMHO) be given as MPGxx at various speeds, i.e. something like this: XXMPGxx @ 45MPH, YYMPGyy @ 55MPH, ZZMPGzz @ 65MPH, etc., where the "xx" tolerances would account for things like passenger/cargo, A/C and headlight loads.
  Reply With Quote
Old 11-10-2012, 03:43 PM   #3 (permalink)
EcoModding Lurker
 
Join Date: Sep 2012
Location: Oakland, CA
Posts: 44

Lincoln - '00 Lincoln Ls
90 day: 24.29 mpg (US)
Thanks: 10
Thanked 3 Times in 2 Posts
Well I totally agree that more info concerning specific models optimum speeds and the such should be available, and the lack therof can be frustrating, but It's really hard for the EPA to put out MPG numbers for different speeds, etc. just because cars are so extremely different. I've seen speed to MPH charts that show some cars maxing out at 60, and some as low as 40.

And frankly, I will embrace a national decrease in highway speed limits. 65 in my book is too fast and 75-80 in some places is way to fast, not to mention that most people go 5-20 over the speed limit anyway. Let them lower the speed limit and let them start giving out speeding tickets in earnest for going over. Maybe it'll teach people not to waste gas, and it'll help people like me to not feel like a jerk when I go 50-55 and everyone is whizzing by at 75. Their wallets will thank them for it when they pay less at the pump.
__________________

  Reply With Quote
The Following 2 Users Say Thank You to wobombat For This Useful Post:
FORDF250HDXLT (11-11-2012), Frank Lee (11-10-2012)
Old 11-10-2012, 04:09 PM   #4 (permalink)
Master EcoModder
 
Join Date: Sep 2009
Posts: 5,927
Thanks: 877
Thanked 2,018 Times in 1,302 Posts
Around my section of Virginia you have a choice between the Interstate at 65-70 posted and the older US routes at 55-60 posted. The older routes are pretty much deserted while the Interstate can really slow to a crawl, sometimes less than a couple of miles in an hour getting past another wreck.

I prefer the older routes, but with the heavy traffic on the Interstate, if you can get behind a larger vehicle you can get the same mileage as you would at 55 without a draft. In heavy traffic separation gets down to below 100 feet AVERAGE which requires extreme concentration and the ability to react very quickly to avoid debris in the road.

Not really a fan of gubbmint regulation, but I think a well enforced 70 MPH limit is good. It was that speed 40 years ago when cars had drum brakes and compared to today they were deathtraps. Of course a lot more people died on the highways back then.

regards
Mech
  Reply With Quote
Old 11-10-2012, 05:01 PM   #5 (permalink)
Master EcoModder
 
nemo's Avatar
 
Join Date: Nov 2010
Location: US
Posts: 897

Chief - '06 Pontiac Grand Prix
90 day: 27.29 mpg (US)

SF1 - '12 Ford Fiesta S
90 day: 36.87 mpg (US)
Thanks: 157
Thanked 195 Times in 152 Posts
Quote:
Originally Posted by Old Mechanic View Post

Not really a fan of gubbmint regulation, but I think a well enforced 70 MPH limit is good.

regards
Mech
I agree. It might even save some fuel and if we had better enforcement of the existing regulations, maybe we would need less regulation. (like that would happen)

Here is a crazy thought the speed limit for a car and driver should be determined by the vehicles stopping distance and the drivers reaction time or the the mass and reaction time or MPG.
__________________

  Reply With Quote
Old 11-10-2012, 07:27 PM   #6 (permalink)
EcoModding Lurker
 
Join Date: Oct 2012
Location: MN
Posts: 11
Thanks: 0
Thanked 6 Times in 2 Posts
Quote:
Originally Posted by wobombat View Post
And frankly, I will embrace a national decrease in highway speed limits. 65 in my book is too fast and 75-80 in some places is way to fast, not to mention that most people go 5-20 over the speed limit anyway. Let them lower the speed limit and let them start giving out speeding tickets in earnest for going over. Maybe it'll teach people not to waste gas, and it'll help people like me to not feel like a jerk when I go 50-55 and everyone is whizzing by at 75. Their wallets will thank them for it when they pay less at the pump.
So, how big is your house? How many kids do you have? How far should this moral authority go? People should know better than to do drive fast, or buy bigger cars than they need and the government should be the ones to tell them so. Really?

Be careful how you speak on these subjects. Our government is taking massive authority in the name of our safety (TSA is just one example) for our own good.

I for one, believe that the individual should make the choices they want and it is not the government's job to decide for them.

If you want to go 50 -55mph in a 65mph zone (for example), that is your choice. But let me decide how fast I want to go. And as long as you are in the right lane, I'll smile and wave as I pass you by.
  Reply With Quote
The Following 5 Users Say Thank You to DevilzTower For This Useful Post:
bestclimb (11-11-2012), redpoint5 (11-13-2012), roosterk0031 (11-13-2012), royanddoreen (11-13-2012), Sven7 (11-11-2012)
Old 11-10-2012, 07:34 PM   #7 (permalink)
EcoModding Lurker
 
Join Date: Sep 2012
Location: Oakland, CA
Posts: 44

Lincoln - '00 Lincoln Ls
90 day: 24.29 mpg (US)
Thanks: 10
Thanked 3 Times in 2 Posts
Probably the best way to do it is to have the speed limit set per lane rather than for the entire highway. So maybe the speed limit in the right lane is 55, 65 in the next, 75 in the next, and 85 in the far left, or maybe even no speed limit in the far left. And to help make it less complicated, you could color code the lines to correspond to the speed limit in that lane, instead of just having white and yellow lane line colors, like green for 55, blue for 65, etc. etc. Maybe it's too complicated, but it would make it a lot easier to drive.
__________________

  Reply With Quote
Old 11-10-2012, 07:36 PM   #8 (permalink)
Always Too Busy
 
Flakbadger's Avatar
 
Join Date: Apr 2012
Location: Oregon
Posts: 439

Betty White - '09 Toyota Yaris Base Sedan
Team Toyota
90 day: 42.28 mpg (US)

Wife's 2015 Fit - '15 Honda Fit
90 day: 40.31 mpg (US)
Thanks: 302
Thanked 99 Times in 80 Posts
Quote:
Originally Posted by nemo View Post
Here is a crazy thought the speed limit for a car and driver should be determined by the vehicles stopping distance and the drivers reaction time or the the mass and reaction time or MPG.
ExCUSE me? That doesn't sound nearly arbitrary enough for a government decision
:P
__________________



"Delicate and orchestrated operation is often required as an Eco-Driver." - RH77

"Some things aren't true, but I choose to believe them. Because it is my right as an American." -Ratking11
  Reply With Quote
Old 11-10-2012, 08:39 PM   #9 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,512

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,493
Thanked 3,278 Times in 2,073 Posts
Quote:
Originally Posted by wobombat View Post
Probably the best way to do it is to have the speed limit set per lane rather than for the entire highway. So maybe the speed limit in the right lane is 55, 65 in the next, 75 in the next, and 85 in the far left, or maybe even no speed limit in the far left. And to help make it less complicated, you could color code the lines to correspond to the speed limit in that lane, instead of just having white and yellow lane line colors, like green for 55, blue for 65, etc. etc. Maybe it's too complicated, but it would make it a lot easier to drive.
Speed differential in such close quarters is worse than the whole clump going too fast.
__________________


  Reply With Quote
The Following User Says Thank You to Frank Lee For This Useful Post:
mackerel (12-04-2012)
Old 11-10-2012, 08:51 PM   #10 (permalink)
Hydrogen > EV
 
Join Date: Apr 2012
Location: NW Ohio, United States
Posts: 2,017

Snow White and the 6.2 Dwarfs - '11 Chevrolet Corvette LT2
Last 3: 26.46 mpg (US)

Silver Flea - '05 Honda Insight
90 day: 58.96 mpg (US)
Thanks: 981
Thanked 383 Times in 279 Posts
Speed limits were raised, to my knowledge, because of increased technology- better fuel efficiency, and high speed stability. Our cars now at 65 are more stable and fuel efficient than than years past at 45-55.

I believe we should have the right to choose to a reason. Speed limit is 65, you can go as slow as 40-45, and here are the consequences forngoing faster.

Not perfect, but I think we have the best set up now, to please as many people as possible. And if people do not care about FE, and they want to getsomewhere fast, let them.

__________________





Best Tanks:
Mustang - 54.83 mpg (US) at the Green Grand Prix
Insight - 82.91966 mpg (US) over 818.5 miles.
  Reply With Quote
The Following User Says Thank You to UltArc For This Useful Post:
night9 (11-16-2012)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com