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09-23-13, 02:29 PM

#76

GreatWhiteShark

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I just read this once, and I initially disagree, because driving faster means you would encounter more automobiles. Right? I cannot understand how it would be the same amount of automobiles, no matter how fast traveling.

I know for automobiles the law enforcement claims the faster someone drives the more dangerous it is to the people in the automobile, because it shrinks the reaction time the driver has. Why would this not also apply to any form of moving on a roadway? Now, I have to say, I only stopped speeding, when I drove, because of the cost of gas, because I strongly disagree, because there is another factor never considered and that is how used to and skilled the driver is at the speed.

Maybe, it has to do with the fact that I ride most in rural area and ride in mix environments.

With all that being said, I could not agree more with you, about driving besides automobiles makes for biggest danger!

Quote:

Originally Posted by DrkAngel

Faster is Safer!
My Sister-in-Law just can't understand, why I feel that going faster, on a bicycle, is safer. "30 mph!" ... "You're gonna kill your self!". ...

I feel it necessary to prove that, up to the speed of surrounding traffic, faster is safer. Let me try a mathematical approach.

First, let me qualify;
1. My riding is in an urban area and 95% of the streets-roads are 30 mph limit.
2. I ride on the right side of the road, going "with traffic", as is the legal method.

For ease of math - Let's figure a 10 mile trip, w/traffic @ 10 cars per minute.

30 mph traffic:

At 10 mph -
60min x 10cars - 1/3 (for 1/3 speed of cars) = 400 cars passing you at 20mph.

At 15 mph -
40min x 10cars - 1/2 (for 1/2 speed of cars) = 200 cars passing you at 15mph.

At 20 mph -
30min x 10cars - 2/3 (for 2/3 speed of cars) = 100 cars passing you at 10mph.
AND, cars have twice the time to notice, and avoid, you! (vs 10 mph).

At 25 mph -
24min x 10 cars -5/6 (for 5/6 speed of cars) = 40 cars passing you at 5mph.

At 30 mph -
20min x 10cars - 3/3 (for 3/3 speed of cars) = 0 cars passing you!

(Math is simplified - but "sound")

When you consider that many bike accidents are directly related to passing cars, especially in a "road" environment, then 20 mph would be (4 times safer than 10 mph) x (2 - twice the time the, approaching, driver has to see biker) = 8 times safer @ 20 mph, compared to 10 mph!

Most impressive is that each speed increase of 5 mph reduces the volume of passing traffic by 50%!

A__hole factor! Everyone might agree that, possibly, 1 in 100 motorists are AHs toward bicyclists, (Conservative Estimate!), Going 10 mph you'll get passed by 4, only 1 @ 20 mph and at 30 mph you might never encounter 1.

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