Stop+Light+Violation

=** Drive Slow Homies! ** = 

 ==__Introduction__ ==


 Sometimes people seriously underestimate the meaning of rules, and why they are put into place. In this case we are talking about the rules that apply to stop lights, when the light is green you proceed, when the light is yellow you proceed with caution, and when the light is red you stop. Stop lights are put on streets, and roads for numerous reasons. The most important ones being that it prevents you from having collisions, it brings order to the driving world, and more importantly it can save your life. The Scenario that we created stresses the kinematics behind driving and following the Stop Light Violation. And things you can do to become better drivers overall, therefore saving your life, and money that would be spent on a lonesome amount of driving tickets. If you like you car and your life I advise you to listen.

media type="custom" key="4985481"  Scenario:  Jason Hewitt is one of the lead scientists at The Franklin Institute. His usual morning commute from his home to work usually takes him around 30 minutes considering traffic. He drives a Audi V8. Traffic in the morning in Central Philadelphia is pretty hectic, so the drivers are usually in a aggressive state of mind, causing a more aggravating commute to work. Jason lives in the University City section of West Philadelphia, and the Franklin Institute is located in the Central section of Philadelphia. As he drives to work, the average speed of the city streets is between 30 and 35 miles per hour. As Jason commutes to work he goes through the JFK underpath, which is in the middle part of the block, and approaches a yellow light on 2200 Arch Street. The speed limit on this street is 35 miles per hour. In order to make it through the yellow light he has to increase his speed to 60mph, which is well above the speed limit and dangerous.


 For one, in order for the driver to stop in time, or make it through the yellow the light. The driver must know the speed at which is he is traveling in ,which is his velocity. He must also know his distance from the yellow light, which is his displacement, and how long the light stays yellow, which is his time. In this scenario it is also helpful to know you starting velocity, starting position, final position, ending velocity, final time. You also

What is velocity?
 Velocity is the speed of an object in a given direction.

Mathematical Equation to find the velocity of a certain object: V= Change in position/Change in time

What is displacement?
Displacement is defined as an objects change in position from a starting point to a ending point.

Mathematical Equation to find the displacement of an object: Change in position= position minus starting position Displacement= x-xo

<span style="color: #00ff00; font-family: 'Comic Sans MS',cursive;">What is acceleration?
<span style="font-family: 'Comic Sans MS',cursive;">Acceleration is the rate of change of velocity with respect of time.

Mathematical equation to find acceleration: Acceleration=Change in velocity, divided the change in time. a=deltav/deltat

<span style="color: #ff0000; font-family: 'Comic Sans MS',cursive;">What is time when applied in physics?
The time when applied to this scenario can be the timing of the yellow light. Or the time it takes Jason to get from the middle of block to the intersection and pass the yellow light.

<span style="color: #ff0000; font-family: 'Comic Sans MS',cursive;">
==<span style="color: #ffff00; font-family: 'Comic Sans MS',cursive;">Yellow Light: Intersection at 94 N 22nd Street ==

==<span style="color: #ff0000; font-family: 'Comic Sans MS',cursive;">Ending Postion: This is not the inital ending point because Jason works at the Franklin Insitute, but this is the point at which he begins to slow after speeding through the intersection. ==



<span style="color: #00ff00; font-family: 'Comic Sans MS',cursive;">Analysis:
<span style="font-family: 'Comic Sans MS',cursive;">0 to 60 in 6.8 Seconds Speed limit on the block is 30 miles per hour. The block is rough about 250 meters as an estimate, I took half of that since I started from the middle and got 150 meters from JFK Underpath to the yellow light. Note: All of this had to be converted into second, and also meters per seconds.

(30*1,609,344)3600=13.4m/s I multiplied 30*1,609,344 and then divided it 3600 to give me 13.4m/s, which is my velocity. Knowing that my car went from 0 to 60 in 6.8 seconds I took half of that which is 3.8 and divided it by 13.4, which is 3.5 m/s squared. I know that my velocity is increasing by 3.5 m/s squared as Jason is accelerating to make it pass the yellow light.





<span style="font-family: 'Comic Sans MS',cursive;">Jason starts from the beginning of block which is 2200 Arch Street the speed limit is 30 miles per hour which is converted into 13.4 meters per second. So Jason is moving at a constant velocity of 13.4 meters per second. When Jason reaches the JFK Underpath he sees that the light has turned yellow, which on the graph is at 5 seconds. He then starts to accelerate, we know that for every second that Jason accelerates his velocity is increasing by 3.5 meters per seconds. Which is shown on the graph because at 5 seconds his velocity is still at 13.4 meters per second, but then at 6 seconds, his velocity is now 16.4 meters per second. After observing and analyzing the data table and graph we now know that from 4 seconds to 8 second Jason has to accelerate from 13.4 meters per second to 26. 8 meters per seconds to make it through the yellow light.

<span style="color: #ff0000; font-family: 'Comic Sans MS',cursive;">Motion Map


<span style="font-family: 'Comic Sans MS',cursive;">The motion map is just another way to show what direction that the car is going in, and how fast the car is going. On this motion map you see the the car is moving at a constant velocity from 0 to 4 seconds, then after that you can tell that the car is now speeding up from 5 to 9 seconds. You can also tell if the car is moving slow or fast, in this case the car is moving slow because it shows the smaller arrows, then it begins to speed up because the arrows get bigger and bigger.

<span style="font-family: 'Comic Sans MS',cursive;">Motor vehicle traffic deaths
<span style="font-family: 'Comic Sans MS',cursive;">
 * <span style="font-family: 'Comic Sans MS',cursive;">Number of deaths: 43,664
 * <span style="font-family: 'Comic Sans MS',cursive;">Deaths per 100,000 population: 14.6
 * <span style="font-family: 'Comic Sans MS',cursive;">Recent statistics from the Utah Department of Transportation show that the number of crashes involving drivers who disregarded traffic signals almost doubled from 2006 to 2007.
 * <span style="font-family: 'Comic Sans MS',cursive;">Nationally, red-light runners cause about 218,000 crashes every year, said Mark Taylor, signal systems engineer for UDOT. People under 30 who are driving alone and are in a hurry run red lights most often, he said.
 * <span style="font-family: 'Comic Sans MS',cursive;">Motorists often think that if they are past the stop line when the light is still yellow, it's OK to proceed, he said. But in reality, a driver must pass the crosswalk, 6 to 8 feet from the stop line, to legally go forward on a yellow.
 * <span style="font-family: 'Comic Sans MS',cursive;">It is also illegal to stop in the middle of the crosswalk, Leany said, so drivers should gauge whether they can clear the crosswalk — the beginning of the intersection — or stop before the stop line.
 * <span style="font-family: 'Comic Sans MS',cursive;">Car Crash Stats: There were nearly 6,420,000 auto accidents in the United States in 2005. The financial cost of these crashes is more than 230 Billion dollars. 2.9 million people were injured and 42,636 people killed. About 115 people die every day in vehicle crashes in the United States -- one death every 13 minutes.
 * <span style="font-family: 'Comic Sans MS',cursive;"> In 2003 there were 6,328,000 car accidents in the US. There were 2.9 million injuries and <span style="color: #000000; font-family: 'Comic Sans MS',cursive;"> [|42,643 people were killed] <span style="font-family: 'Comic Sans MS',cursive;"> in auto accidents.
 * <span style="font-family: 'Comic Sans MS',cursive;"> In 2002, there were an estimated 6,316,000 car accidents in the USA. There were about 2.9 million injuries and 42,815 people were killed in auto accidents in 2002.
 * <span style="font-family: 'Comic Sans MS',cursive;"> There were an estimated 6,356,000 car accidents in the US in 2000. There were about 3.2 million injuries and 41,821 people were killed in auto accidents in 2000 based on data collected by the Federal Highway Administration.

<span style="font-family: 'Comic Sans MS',cursive;"> **How this Hazard Can Be Avoided With a Better Knowledge of Kinematics**
<span style="font-family: 'Comic Sans MS',cursive;"> Using the principles of Kinematics, and the formulas which are included for velocity, starting velocity, final velocity, displacement, and initial velocity. A driver can now calculate how fast he is moving, which is his acceleration. Which can tell him how fast or slow he needs to be going to make it through the intersection, or for him to come to a safe stop. If he needs to speed up 5 or ten miles miles per hour to make it through the light, he might make it, but if he needs to speed up 10 more miles or above to make it make, it is even more dangerous.

<span style="font-family: 'Comic Sans MS',cursive;"><span style="font-family: 'Comic Sans MS',cursive;"> <span style="color: #ff0000; font-family: 'Comic Sans MS',cursive;">**Conclusion**
<span style="font-family: 'Comic Sans MS',cursive;"> In conclusion I can not stress enough how much Kinematics plays a role in driving. With a simple and significant amount of knowledge about the Kinematics behind driving and in this case stop light violation, it can save your life. It can tell how long you have to get pass a yellow light. How fast you need to be going to get past a yellow light, and how far away you can be to actually have enough time to pass through the yellow light, And also how long it will take for the police man to catch up too you to give you your outrageous ticket.

Remember Green light means go, Red light means stop, but yellow light doesn't mean you better hurry up and speed through this intersection. Think about it, wouldn't you rather spend a couple more seconds at a stoplight, then ending you life in seconds. When you are on the road driving it is not just you and your nice car, it is millions of people, with there family, friends, and children. There are actual lives at state.

Use the Kinematics behind driving to your advantage, use common sense, and follow the rules of the road. Because they were put there for a reason.

<span style="font-family: 'Comic Sans MS',cursive;">Sources:
<span style="font-family: 'Comic Sans MS',cursive;"> http://www.carspecsdirectory.com/Audi.htm http://maps.google.com/ http://www.cdc.gov/nchs/FASTATS/acc-inj.htm http://www.deseretnews.com/article/705320246/UDOT-sees-spike-in-crashes-involving-running-of-red-lights.html http://www.car-accidents.com/pages/stats.html