Our forensics department is able to use formulas to calculate the speed of the car before impact, the weight of the car's tire, and the amount of friction and force acting on both vehicles in the time of the crash. Our plan is to convince local officials in our area and possibly even beyond that these formulas can heavily impact the outcome of automobile accidents and should be used regularly by law enforcement. Our first formula calculates the speed of the vehicle before impact using basic variables. This formula is used if the crash did not contain advanced variables. The formula is S=15.9√df with S=speed, d=distance of skid markers, f= coefficient of friction. To find the coefficient of friction, you must use the formula f= F/w where f= coefficient of friction, F= force of gravity, and w=weight of tire. When vehicles move, they cause skid marks. Skid marks in a circular direction are called yaw marks. Yaw marks are an integral part of another formula which accident reconstructionist can use. This formula can calculate the speed of a vehicle before it began to produce yaw marks. The formula is S=15.9√[R ·(f ±e)]/2 depending on whether the elevation of the road is negative or positive. In this formula, S=speed, R=radius of yaw marks, f=coefficient of friction, and e=elevation of road. The reason why the plus-minus sign is used in this formula is because the elevation of the road can be positive or negative. As you can see, math and science is much more reliable than the number one source policemen use today, eyewitnesses. Math and science is the future for automobile accidents everywhere in the world.