Speed Kills "myth" - Page 2 - Fuel Economy, Hypermiling, EcoModding News and Forum

gone-ot · 09-12-2013, 10:16 PM

What I recall most from my physics classes is that SPEED (V) wasn't the problem, but rather the suddeness of change-in-velocity (dV/dt), i.e.: the STOPPING function (wink,wink)...how fast the "...rock-&-hard place..." meet!

Xist · 09-13-2013, 12:32 AM

If you did not waste your time watching the video:

ksa8907 · 09-13-2013, 07:11 AM

As long as we're talking about safety...

niky · 09-13-2013, 09:35 AM

Obviously, speed doesn't kill.

Speed differential does.

The problem is when v is high enough, the differential with stationary objects like bridge pylons, dividers, curbs, pedestrians (given the difference, walking speed makes no difference at all) and stalled cars becomes unacceptably high.

-

People don't drive at a speed they consider safe. They drive at a speed they consider comfortable. Unfortunately, modern cars are so quiet and composed at speed that 100-120 mph is perfectly comfortable in most cars, no matter how suitable those speeds are to the current road conditions.

-

Which means, to bring down speeds and conserve oil, everyone should be driving stripped out, roofless Miatas. Without helmets or goggles.

P-hack · 09-13-2013, 10:27 AM

With higher speeds, you will encounter higher speed differentials more frequently. Slower people pay for the roads too, and as long as they are not in the left lane there isn't really much to get upset about. Insert something about tolerance here, and paying attention to driving...

UFO · 09-13-2013, 10:35 AM

Quote:

Originally Posted by ksa8907

As long as we're talking about safety...

That is impressive. One driver dies, the other walks away.

justme1969 · 09-13-2013, 11:24 AM

How that same Malibu would fare against a 59 caddi with the bullet bumper.

Frank Lee · 09-13-2013, 11:24 AM

Yeah, but one goes out in STYLE!

Xist · 09-13-2013, 04:29 PM

Poor Cadillac! It was gorgeous!

nemo · 09-13-2013, 07:36 PM

Cadillac? Video? Chevrolet.

09-13-2013, 11:24 AM	#17 (permalink)
justme1969 Master EcoModder Join Date: Dec 2012 Location: ff Posts: 459 Thanks: 59 Thanked 38 Times in 30 Posts	I wonder? How that same Malibu would fare against a 59 caddi with the bullet bumper.

09-13-2013, 11:24 AM	#18 (permalink)
Frank Lee (: Join Date: Jan 2008 Location: up north Posts: 12,762 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: 1,585 Thanked 3,555 Times in 2,218 Posts	Yeah, but one goes out in STYLE! __________________

09-13-2013, 09:35 AM	#14 (permalink)
niky Master EcoModder Join Date: Aug 2010 Location: Philippines Posts: 2,173 Thanks: 1,739 Thanked 589 Times in 401 Posts	Obviously, speed doesn't kill. Speed differential does. The problem is when v is high enough, the differential with stationary objects like bridge pylons, dividers, curbs, pedestrians (given the difference, walking speed makes no difference at all) and stalled cars becomes unacceptably high. - People don't drive at a speed they consider safe. They drive at a speed they consider comfortable. Unfortunately, modern cars are so quiet and composed at speed that 100-120 mph is perfectly comfortable in most cars, no matter how suitable those speeds are to the current road conditions. - Which means, to bring down speeds and conserve oil, everyone should be driving stripped out, roofless Miatas. Without helmets or goggles.

09-13-2013, 10:27 AM	#15 (permalink)
P-hack Master EcoModder Join Date: Oct 2012 Location: USA Posts: 1,408 awesomer - '04 Toyota prius Thanks: 102 Thanked 252 Times in 204 Posts	With higher speeds, you will encounter higher speed differentials more frequently. Slower people pay for the roads too, and as long as they are not in the left lane there isn't really much to get upset about. Insert something about tolerance here, and paying attention to driving...

09-13-2013, 04:29 PM	#19 (permalink)
Xist Not Doug Join Date: Jun 2012 Location: Show Low, AZ Posts: 12,186 Chorizo - '00 Honda Civic HX, baby! :D 90 day: 35.35 mpg (US) Mid-Life Crisis Fighter - '99 Honda Accord LX 90 day: 34.2 mpg (US) Gramps - '04 Toyota Camry LE 90 day: 35.39 mpg (US) Don't hit me bro - '05 Toyota Camry LE 90 day: 29.44 mpg (US) Thanks: 7,225 Thanked 2,217 Times in 1,708 Posts	Poor Cadillac! It was gorgeous!

09-13-2013, 07:36 PM	#20 (permalink)
nemo Master EcoModder Join Date: Nov 2010 Location: US Posts: 1,015 Chief - '06 Pontiac Grand Prix 90 day: 26.7 mpg (US) SF1 - '12 Ford Fiesta S 90 day: 30.95 mpg (US) Thanks: 195 Thanked 247 Times in 190 Posts	Cadillac? Video? Chevrolet.