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SVTPerformance's Chain of Restaurants
Donut Shop
Reckless Driving by speed in VA, advice please.
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<blockquote data-quote="ASRacer" data-source="post: 12015677" data-attributes="member: 139325"><p>As a driving instructor, race driver, etc., I can tell you that the problem comes from several different factors:</p><p>1) Following distance. The safe following distance at 35 MPH and below is the traditional 2-second rule. At 35 MPH this is a following distance of 102.6 feet. Increase the speed to 36-45 MPH and the safe following distance is 3-seconds (this is a departure from traditional driver's education and represents the newer methodology) or about 198 feet. Go above 45 MPH and the recommended safe following distance is 4-seconds:</p><p>Speed - 4sec. Distance</p><p>55 MPH - 322.6'</p><p>60 MPH - 352.0'</p><p>70 MPH - 410.6'</p><p>80 MPH - 469.3'</p><p>90 MPH - 528.0'</p><p></p><p>So at a speed of 60 MPH you should be following farther than a football field's distance. With the average reaction time of about 1.5-seconds under ideal conditions, visibility, driver attention, etc. you'll cover 88 feet (nearly 1/3 the total distance) leaving you with 264 feet to react. But you also need to add movement time and device response time. Device response time is typically about .3 seconds. So total reaction time is about 1.8 seconds covering 158.4-feet.</p><p></p><p>If you have no option but to stop given the Shelby's 60-0 of about 105 feet you've just chewed up 263.4 feet of total travel from identification of stimulus to complete stop. So subtract 263.4 from 352.0 and we get 88.6 feet. This yields a cushion of 1-second.</p><p></p><p>Now let's kick the speed up to 70 MPH. Where stopping distance goes to 155-feet. Safe following distance is now 410-feet if we're using the 4-second rule. With our reaction time and braking requirements we chew up 339.8-feet leaving a cushion of 0.69-seconds.</p><p></p><p>I don't have any braking numbers for the higher speeds, but if we make the very, very conservative estimate that each 10 MPH yields an additional 50-feet then the numbers get interesting.</p><p></p><p>At 90 MPH your safe following distance is 528-feet @ 4-seconds. You are covering 132-feet every second. To get the car stopped would leave you with only .27 seconds reaction time buffer. Realistically the braking numbers from 90 MPH would be more in the 300-foot range.</p><p></p><p>2) The other problem is speed differential. Since we can't mandate that everyone drive the exact same speed if you have a majority of cars at the 85th percentile speed and a few cars well beyond that you have a serious problem. The greater the speed differential the greater the danger. This is why lane discipline is so terribly important. And in this day and age in America people simply don't follow it.</p><p></p><p>3) Poor vehicle maintenance. Having taught advanced street driving schools for many, many years now I have seen some serious crap-boxes roll into our courses. Some vehicles have so little braking capacity that they cannot even apply enough force on the brakes to engage the ABS. This has happened on numerous occasions. The number of people running around with under-inflated tires is probably 75%.</p><p></p><p>Then there are patched tires where the speed rating has been destroyed. Lug nuts that haven't had their torque checked. Broken safety equipment on the car, defective air bags, tie rod ends, wheel bearings, etc.</p><p></p><p>4) Most importantly the lack of driver training is the sole constant that causes crashes.</p><p></p><p></p><p></p><p>I agree; however, we are still killing over 38,000 people each year in car crashes. Over TWO MILLION people will be injured in the same time frame. So #4 above has some serious bearing.</p><p></p><p></p><p></p><p>When you look at the sheer volume of traffic out there on the road, to get pulled over is statistically improbable. I'll take the case of one road that I know of. Throughout a 24-hour, weekday, period approximately 47,490 cars travel down this road. In that 24 hour period probably no more than 25 tickets will be written. So for every ticket that driver was doing something that 1,900 people were NOT doing. Those are pretty good odds. Break that down and it's slightly more than ONE ticket per hour. That means that you have to be doing something pretty stupid to make yourself stand out like a sore thumb to get a ticket.</p><p></p><p>Now, consider this. How do the following people get around:</p><p></p><ul> <li data-xf-list-type="ul">Bank robber</li> <li data-xf-list-type="ul">Murderer</li> <li data-xf-list-type="ul">Car-jacker</li> <li data-xf-list-type="ul">Burglar</li> <li data-xf-list-type="ul">Pedophile</li> <li data-xf-list-type="ul">Gang-Member</li> <li data-xf-list-type="ul">Drunk</li> <li data-xf-list-type="ul">Suspended Driver</li> <li data-xf-list-type="ul">Illegal Alien</li> <li data-xf-list-type="ul">Terrorist</li> <li data-xf-list-type="ul">Drug Dealer</li> <li data-xf-list-type="ul">Rapist</li> <li data-xf-list-type="ul">Wife-beater</li> </ul><p>EVERY ONE of these criminals gets around in a car. You would be amazed at the number of scum bags that have gotten locked up from a simple traffic stop. So what you may consider "low-hanging fruit" is in reality one of the most reliable methods for catching criminals.</p><p></p><p>The police are a reactive force only. They are not there to protect your property. They are not there to protect you. Personal safety is the responsibility of the individual. So to expect them to know where a crime is going to happen, who is going to do it, when it is going to happen, and to be there ready and waiting for it is ludicrous. Police have no more predictive powers than anyone else. When we catch someone in the act it is usually sheer luck.</p><p></p><p>Again, the traffic stop is one of the most effective investigative tools in law enforcement.</p></blockquote><p></p>
[QUOTE="ASRacer, post: 12015677, member: 139325"] As a driving instructor, race driver, etc., I can tell you that the problem comes from several different factors: 1) Following distance. The safe following distance at 35 MPH and below is the traditional 2-second rule. At 35 MPH this is a following distance of 102.6 feet. Increase the speed to 36-45 MPH and the safe following distance is 3-seconds (this is a departure from traditional driver's education and represents the newer methodology) or about 198 feet. Go above 45 MPH and the recommended safe following distance is 4-seconds: Speed - 4sec. Distance 55 MPH - 322.6' 60 MPH - 352.0' 70 MPH - 410.6' 80 MPH - 469.3' 90 MPH - 528.0' So at a speed of 60 MPH you should be following farther than a football field's distance. With the average reaction time of about 1.5-seconds under ideal conditions, visibility, driver attention, etc. you'll cover 88 feet (nearly 1/3 the total distance) leaving you with 264 feet to react. But you also need to add movement time and device response time. Device response time is typically about .3 seconds. So total reaction time is about 1.8 seconds covering 158.4-feet. If you have no option but to stop given the Shelby's 60-0 of about 105 feet you've just chewed up 263.4 feet of total travel from identification of stimulus to complete stop. So subtract 263.4 from 352.0 and we get 88.6 feet. This yields a cushion of 1-second. Now let's kick the speed up to 70 MPH. Where stopping distance goes to 155-feet. Safe following distance is now 410-feet if we're using the 4-second rule. With our reaction time and braking requirements we chew up 339.8-feet leaving a cushion of 0.69-seconds. I don't have any braking numbers for the higher speeds, but if we make the very, very conservative estimate that each 10 MPH yields an additional 50-feet then the numbers get interesting. At 90 MPH your safe following distance is 528-feet @ 4-seconds. You are covering 132-feet every second. To get the car stopped would leave you with only .27 seconds reaction time buffer. Realistically the braking numbers from 90 MPH would be more in the 300-foot range. 2) The other problem is speed differential. Since we can't mandate that everyone drive the exact same speed if you have a majority of cars at the 85th percentile speed and a few cars well beyond that you have a serious problem. The greater the speed differential the greater the danger. This is why lane discipline is so terribly important. And in this day and age in America people simply don't follow it. 3) Poor vehicle maintenance. Having taught advanced street driving schools for many, many years now I have seen some serious crap-boxes roll into our courses. Some vehicles have so little braking capacity that they cannot even apply enough force on the brakes to engage the ABS. This has happened on numerous occasions. The number of people running around with under-inflated tires is probably 75%. Then there are patched tires where the speed rating has been destroyed. Lug nuts that haven't had their torque checked. Broken safety equipment on the car, defective air bags, tie rod ends, wheel bearings, etc. 4) Most importantly the lack of driver training is the sole constant that causes crashes. I agree; however, we are still killing over 38,000 people each year in car crashes. Over TWO MILLION people will be injured in the same time frame. So #4 above has some serious bearing. When you look at the sheer volume of traffic out there on the road, to get pulled over is statistically improbable. I'll take the case of one road that I know of. Throughout a 24-hour, weekday, period approximately 47,490 cars travel down this road. In that 24 hour period probably no more than 25 tickets will be written. So for every ticket that driver was doing something that 1,900 people were NOT doing. Those are pretty good odds. Break that down and it's slightly more than ONE ticket per hour. That means that you have to be doing something pretty stupid to make yourself stand out like a sore thumb to get a ticket. Now, consider this. How do the following people get around: [LIST] [*]Bank robber [*]Murderer [*]Car-jacker [*]Burglar [*]Pedophile [*]Gang-Member [*]Drunk [*]Suspended Driver [*]Illegal Alien [*]Terrorist [*]Drug Dealer [*]Rapist [*]Wife-beater [/LIST] EVERY ONE of these criminals gets around in a car. You would be amazed at the number of scum bags that have gotten locked up from a simple traffic stop. So what you may consider "low-hanging fruit" is in reality one of the most reliable methods for catching criminals. The police are a reactive force only. They are not there to protect your property. They are not there to protect you. Personal safety is the responsibility of the individual. So to expect them to know where a crime is going to happen, who is going to do it, when it is going to happen, and to be there ready and waiting for it is ludicrous. Police have no more predictive powers than anyone else. When we catch someone in the act it is usually sheer luck. Again, the traffic stop is one of the most effective investigative tools in law enforcement. [/QUOTE]
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Reckless Driving by speed in VA, advice please.
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