Welcome to the North American Subaru Impreza Owners Club Wednesday October 1, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC General > News & Rumors > Non-Subaru News & Rumors

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 10-27-2009, 02:07 PM   #1
AVANTI R5
Scooby Guru
 
Member#: 73805
Join Date: Nov 2004
Default Utah DOT: No Downside to 80 MPH Speed Limit Increase




Quote:
The Utah Department of Transportation (UDOT) announced last week that the experimental increase in the state's maximum speed limit to 80 MPH has been a success in terms of safety. UDOT Deputy Director Carlos Braceras testified before the state Interim Committee on Transportation that that there has been no increase in accidents as a result of the higher number printed on the speed limit signs on certain stretches of Interstate 15.

In 2008, the state legislature granted UDOT permission to test higher limits on rural sections of the road. Using crash histories, engineering studies, UDOT carefully selected the areas that it believed would best handle the increased limit. The department then conducted before and after surveys of speeds and traffic volume on the three sections where the limit was changed. Although the signs permitted another 5 MPH in speed, the results showed that drivers did not 'take advantage' of the new limit to drive significantly faster.

"Overall we saw speeds increase between two and three miles per hour," Braceras explained. "The speed differentials did increase... We saw no change in accident history, which with how careful we were in choosing this location it wasn't surprising to us, but it was very good news to see that... The number of vehicles exceeding the speed limit decreased 20 percent."

With the speed limit posted at 75 MPH, 85th percentile speeds measured between 81 and 85 MPH -- barely different from the 83 to 85 MPH speeds under the higher 80 MPH limit. The 85th percentile speed represents the speed at which 85 percent of free-flowing traffic feels is the safest. Engineers have determined that the greatest safety can be achieved when speed limits match the 85th percentile speed. State Representative James Dunnigan (R-Taylorsville) championed the results as evidence that the law allowing a higher limit has been a success.

"One of the concerns when we presented this bill a couple of sessions ago was that people would increase speeds to 90 or 95 and there would be tremendous carnage on the road," Dunnigan said. "So even though it has only been a year, that has not happened. And really all that's happened is that people haven't changed their speed much -- a little bit -- but they're doing so legally... So by increasing the speed limit to 80, we just made them legal."

National Motorists Association researcher John Carr reviewed the data and suggested that coverage of speed limit increases always includes dire predictions of increased carnage. He pointed to an accident on the 75 MPH portion of I-15 just after the limit was raised on a nearby stretch as an example of skewed perspectives on the issue.

"It could have been anywhere," Carr wrote. "Inside the 80 MPH zone it would have been taken as proof that the speed limit increase was recklessly endangering drivers. In the 75 zone it was not taken as an indictment of the low speed limit. That is how people think about speed limits. Ignore what they don't want to believe, panic over what they do want to believe."

UDOT is pleased with the results and will continue to watch the performance of I-15 under the higher limits.

"We believe this warrants further examination in the long term," Braceras said. "We take safety very seriously... This isn't something we consider to be a trivial undertaking -- just go up and change the speed limit sign... We may want to after we've had a chance to evaluate this a little longer and we feel that we have something with more statistical significance it may be appropriate at that time to expand it to other sections of other highways."

http://www.thenewspaper.com/news/29/2941.asp
* Registered users of the site do not see these ads.
AVANTI R5 is offline   Reply With Quote
Old 10-27-2009, 02:09 PM   #2
Stanley
Scooby Guru
 
Member#: 7374
Join Date: Jun 2001
Location: North Bay, SFCA
Vehicle:
2007 Grandpamobile
BlingBlingBlue

Default

Ruh roh. Someone didn't check with their insurance buddies before releasing this. Deputy Director Carlos Braceras would be wise to polish up his resume.
Stanley is offline   Reply With Quote
Old 10-27-2009, 02:55 PM   #3
jigga
Scooby Guru
 
Member#: 9960
Join Date: Sep 2001
Location: in bed...
Vehicle:
2002 Impreza WRX
WRBlue Perl

Default

^^
jigga is offline   Reply With Quote
Old 10-27-2009, 03:01 PM   #4
Nico Flax
Scooby Specialist
 
Member#: 109531
Join Date: Mar 2006
Chapter/Region: MAIC
Location: Ashburn Virginia
Vehicle:
2006 STI
2008 CBR1000

Default

Yay... now VAs turn! PLEASE FOR THE LOVE OF GOD 55 and 65 IS INSANITY!!!!!

Edit:

Of course anyone who thought raising the speed limit would cause more accidents wasn't thinking, it's the severity of accidents that goes up with the increase in speed.
Nico Flax is offline   Reply With Quote
Old 10-27-2009, 03:16 PM   #5
Calamity Jesus
Scooby Guru
 
Member#: 44501
Join Date: Oct 2003
Chapter/Region: South East
Location: in a minefield of caddishness.
Vehicle:
1984 "Skeletor from
"He-Man"

Default

I'm not at all surprised with their findings. I typically do 70-75 on highways marked 65. I'll do the same 70-75 on highways marked 70. That's fast enough for the roads in Western NC.


VA makes way too much revenue from tickets for them to raise the limits. If anything they'll seek lower limits.
Calamity Jesus is offline   Reply With Quote
Old 10-27-2009, 05:01 PM   #6
quentinberg007
Scooby Guru
 
Member#: 7887
Join Date: Jun 2001
Default

Title says "no downside". Article says "no downside in safety". There sure as **** is a downside in fuel economy. You are seeing ~ 30% more aerodynamic drag at 80mph versus 70mph. That square of the velocity in the drag equation is a bitch.
quentinberg007 is online now   Reply With Quote
Old 10-27-2009, 05:40 PM   #7
Yotsuya
Scooby Guru
 
Member#: 935
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: ಠ_ಠ
Vehicle:
Jack Soo Fan Club

Default

I-15? I didn't see any of those signs on I-80 this spring. Just a bunch of stuff about 'slow down, mountains.'
Yotsuya is online now   Reply With Quote
Old 10-27-2009, 06:25 PM   #8
Calamity Jesus
Scooby Guru
 
Member#: 44501
Join Date: Oct 2003
Chapter/Region: South East
Location: in a minefield of caddishness.
Vehicle:
1984 "Skeletor from
"He-Man"

Default

Quote:
Originally Posted by quentinberg007 View Post
Title says "no downside". Article says "no downside in safety". There sure as **** is a downside in fuel economy. You are seeing ~ 30% more aerodynamic drag at 80mph versus 70mph. That square of the velocity in the drag equation is a bitch.
Did you miss the part about how the actual speed of traffic only increased 2mph among some of the 85th percentile?
Calamity Jesus is offline   Reply With Quote
Old 10-27-2009, 08:03 PM   #9
quentinberg007
Scooby Guru
 
Member#: 7887
Join Date: Jun 2001
Default

Quote:
Originally Posted by Beaverboy View Post
Did you miss the part about how the actual speed of traffic only increased 2mph among some of the 85th percentile?
I can't be bothered to read all those words. I'll preface my rant w/ a "assuming folks follow the speed limits" next time.
quentinberg007 is online now   Reply With Quote
Old 10-27-2009, 08:29 PM   #10
sxotty
Scooby Specialist
 
Member#: 95600
Join Date: Sep 2005
Location: Pittsburgh
Vehicle:
2003 WRX wagon
Silver

Default

Quote:
Originally Posted by Nico Flax View Post
Yay... now VAs turn! PLEASE FOR THE LOVE OF GOD 55 and 65 IS INSANITY!!!!!

Edit:

Of course anyone who thought raising the speed limit would cause more accidents wasn't thinking, it's the severity of accidents that goes up with the increase in speed.
Actually the difference in speeds is the main driving force (pun intended). If you have people going 80 and 20 on the same road bad things happen.
sxotty is offline   Reply With Quote
Old 10-27-2009, 08:51 PM   #11
EtoS
Scooby Specialist
 
Member#: 102238
Join Date: Dec 2005
Chapter/Region: Tri-State
Location: I'm lost in Trenton
Vehicle:
08 DGM STi
*RIP* 06 WRX TR

Default

If only other politicians would allow this. Too bad they're all corrupt to the bone and wouldn't let cash cow die so easily =/.
EtoS is offline   Reply With Quote
Old 10-27-2009, 09:26 PM   #12
Derbagger
Scooby Specialist
 
Member#: 32113
Join Date: Jan 2003
Chapter/Region: NESIC
Location: Trollhatten, Japan
Vehicle:
05 Saabaru
Satin Grey

Default

Quote:
Originally Posted by quentinberg007 View Post
Title says "no downside". Article says "no downside in safety". There sure as **** is a downside in fuel economy. You are seeing ~ 30% more aerodynamic drag at 80mph versus 70mph. That square of the velocity in the drag equation is a bitch.
but why do they have to mandate fuel savings. you are free to drive slower if you want.


How do they fund all their pet projects with reduced ticket income?
Derbagger is offline   Reply With Quote
Old 10-27-2009, 10:21 PM   #13
quentinberg007
Scooby Guru
 
Member#: 7887
Join Date: Jun 2001
Default

Quote:
Originally Posted by Derbagger View Post
but why do they have to mandate fuel savings. you are free to drive slower if you want.


How do they fund all their pet projects with reduced ticket income?
Not sure where I said they should mandate it. I was just stating that there is a downside to driving at higher speeds.

Even if the speed limits were 150mph, police can find reasons to pull people over. Speeding just happens to be the rule that most people break.
quentinberg007 is online now   Reply With Quote
Old 10-27-2009, 10:55 PM   #14
impreza_punk
Scooby Specialist
 
Member#: 102900
Join Date: Dec 2005
Chapter/Region: MAIC
Location: Murderland/Bel Air Subaru Club
Vehicle:
2005 Impreza STi

Default

Quote:
Originally Posted by Beaverboy View Post
VA makes way too much revenue from tickets for them to raise the limits. If anything they'll seek lower limits.
This. I got ticketed for speeding in their "Safety Corridor" only to find out the corridor spans from Richmond to the Maryland line and it only means doubling of the fine. There is absolutely no reason for such a thing, it displays their hunger for more revenue from motorists.
impreza_punk is offline   Reply With Quote
Old 10-28-2009, 04:27 AM   #15
slvr bullet
Scooby Newbie
 
Member#: 52400
Join Date: Jan 2004
Location: Sacramento
Vehicle:
2004 WRX Wagon
Platinum Silver Metallic

Default

Quote:
Originally Posted by sxotty View Post
Actually the difference in speeds is the main driving force (pun intended). If you have people going 80 and 20 on the same road bad things happen.
Winnar. Several studys done showing these sort of results. The question then is, did they change the speed limit for Semi-trucks too? If not, you are increasing speed differentials. Although, their study seems to inidicate no change in accident rates. If that is truely the case then so much the better!
slvr bullet is offline   Reply With Quote
Old 10-28-2009, 09:28 AM   #16
KC
Scooby Guru
 
Member#: 442
Join Date: Oct 1999
Chapter/Region: NESIC
Location: SE Mass/RI
Vehicle:
2013 Crosstrek XV
00 Honda S2000

Default

Quote:
Originally Posted by sxotty View Post
Actually the difference in speeds is the main driving force (pun intended). If you have people going 80 and 20 on the same road bad things happen.
Driving 20 on a highway is more illegal than 80 in a 75. There are such things as "unsafe speed" and minimum speed limits.

--kC
KC is offline   Reply With Quote
Old 10-28-2009, 10:35 AM   #17
Calamity Jesus
Scooby Guru
 
Member#: 44501
Join Date: Oct 2003
Chapter/Region: South East
Location: in a minefield of caddishness.
Vehicle:
1984 "Skeletor from
"He-Man"

Default

Quote:
Originally Posted by slvr bullet View Post
Winnar. Several studys done showing these sort of results. The question then is, did they change the speed limit for Semi-trucks too? If not, you are increasing speed differentials. Although, their study seems to inidicate no change in accident rates. If that is truely the case then so much the better!
Utah, like most states, doesn't have a separate truck speed limit.

Why Arkansas, Cali, Idaho, Indiana, Illinois, Michigan, Montana, Oregon and Washington have lower limits for trucks is a mystery to me. It's understandable in Texas's case since they limit trucks to 70 and cars to 80.


http://en.wikipedia.org/wiki/Speed_l..._United_States
Calamity Jesus is offline   Reply With Quote
Old 10-28-2009, 10:44 AM   #18
KC
Scooby Guru
 
Member#: 442
Join Date: Oct 1999
Chapter/Region: NESIC
Location: SE Mass/RI
Vehicle:
2013 Crosstrek XV
00 Honda S2000

Default

Many fleet trucks are actually limited/goverened in top speed anyways.

--kC
KC is offline   Reply With Quote
Old 10-28-2009, 10:54 AM   #19
KC
Scooby Guru
 
Member#: 442
Join Date: Oct 1999
Chapter/Region: NESIC
Location: SE Mass/RI
Vehicle:
2013 Crosstrek XV
00 Honda S2000

Default

Quote:
Originally Posted by AVANTI R5 View Post
The picture used is on the following Wikipedia page:

http://en.wikipedia.org/wiki/Speed_l..._United_States

Quote:
Texas Legislator Pete Gallego unveiling a new 80 mph speed limit sign on Interstate 10 near Fort Stockton, Texas.
Fail!

--kC
KC is offline   Reply With Quote
Old 10-28-2009, 10:55 AM   #20
Yotsuya
Scooby Guru
 
Member#: 935
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: ಠ_ಠ
Vehicle:
Jack Soo Fan Club

Default

I was more than a little annoyed when Illinois didn't drop separate speed limits for trucks last year. Nothing more depressing that seeing a long convoy having to do the exact speed limit while some jackass with their cruise control set at 1 mph higher creeps around all of them.

It's better late at night, when trucks are pretty much the only thing on the road. They open up a bit and will roll between 80 and 85. Usually at that point I'm worn out from driving all day and just looking for a place to get coffee or pull over for a bit of sleep.

May be a little dated, but I like this picture better, even with the lower limit:
Yotsuya is online now   Reply With Quote
Old 10-28-2009, 10:58 AM   #21
LIQUIDSK8S
Scooby Specialist
 
Member#: 22605
Join Date: Aug 2002
Location: Boca Raton, FL
Vehicle:
2002 JDM STI/WRX
WRB

Default

We just need an autobahn, slow traffic stay to the right and the problem will be solved....... if we can train drivers to understand this simple concept. In Germany they have a lower limit for trucks, but because they have to stay to the right, the speed differential doesn't have much effect on safety.
LIQUIDSK8S is offline   Reply With Quote
Old 10-28-2009, 11:05 AM   #22
Yotsuya
Scooby Guru
 
Member#: 935
Join Date: Feb 2000
Chapter/Region: MWSOC
Location: ಠ_ಠ
Vehicle:
Jack Soo Fan Club

Default

Quote:
Originally Posted by LIQUIDSK8S View Post
We just need an autobahn, slow traffic stay to the right and the problem will be solved....... if we can train drivers to understand this simple concept. In Germany they have a lower limit for trucks, but because they have to stay to the right, the speed differential doesn't have much effect on safety.
Outside of most cities this is already the case. Unless it's someone with California plates and not in California. For some reason they always cruise in the left lane and never move over, even when rigs overtake them.
Yotsuya is online now   Reply With Quote
Old 10-28-2009, 11:19 AM   #23
nhat
Scooby Guru
 
Member#: 140163
Join Date: Feb 2007
Chapter/Region: MAIC
Location: 3MI Racing
Vehicle:
03 STi
hellaflunctional

Default

i'd be happy with 75mph speed limit on ALL major highways/interstates, but there will always be that left lane camper that forces everyone to pass him/her on the right...i've actually gotten someone to move out of my way once, but they cut everybody behind me off as soon as i passed

i'd forgo the higher speed limit if legislators/dot would get local and state PD to enforce the 'slower traffic keep right unless to pass' rule and make it a hefty fine.
nhat is offline   Reply With Quote
Old 10-28-2009, 11:31 AM   #24
sxotty
Scooby Specialist
 
Member#: 95600
Join Date: Sep 2005
Location: Pittsburgh
Vehicle:
2003 WRX wagon
Silver

Default

Quote:
Originally Posted by KC View Post
Driving 20 on a highway is more illegal than 80 in a 75. There are such things as "unsafe speed" and minimum speed limits.
--kC
I am aware of that and it was an exaggeration. Accident rates track with the standard deviation in speed. That is just the way it is.

Quote:
Originally Posted by Beaverboy View Post
Utah, like most states, doesn't have a separate truck speed limit.
Why Arkansas, Cali, Idaho, Indiana, Illinois, Michigan, Montana, Oregon and Washington have lower limits for trucks is a mystery to me. It's understandable in Texas's case since they limit trucks to 70 and cars to 80.
http://en.wikipedia.org/wiki/Speed_l..._United_States
Texas must have changed since I lived there b/c it certainly wasn't that way a couple years ago. It was 70 everywhere except I10 west of SA where it was 80/70 like you said.
sxotty is offline   Reply With Quote
Old 10-28-2009, 05:08 PM   #25
LIQUIDSK8S
Scooby Specialist
 
Member#: 22605
Join Date: Aug 2002
Location: Boca Raton, FL
Vehicle:
2002 JDM STI/WRX
WRB

Default

Quote:
Originally Posted by Yotsuya View Post
Outside of most cities this is already the case. Unless it's someone with California plates and not in California. For some reason they always cruise in the left lane and never move over, even when rigs overtake them.
Not really, it may be in the books that slow traffic should keep right, but it is not enforced in any way most of the time. Florida won't make it a law that can receive a ticket etc...... it annoys me to no end because everyone just camps out in the left lane like a tractor beam sucked them into it.
LIQUIDSK8S is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Should we return to 55 MPH speed limit? plunk10 Off-Topic 82 07-26-2006 12:15 AM
possible speed limit increase in OR? wa-ForesterXT North West Impreza Club Forum -- NWIC 3 04-19-2005 02:46 PM
112 MPH speed limiter Poppa smurf Normally Aspirated Powertrain 42 11-20-2002 09:53 AM
55 mph speed limit poll QA Guy Texas Impreza Club Forum -- TXIC 25 12-17-2001 05:47 PM
55 mph speed limits poll QA Guy Texas Impreza Club Forum -- TXIC 0 12-17-2001 12:59 PM


All times are GMT -4. The time now is 11:41 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.