Forensic Tire Impressions

5 Written Questions

1. Appear after the car tracked through liquid
   (ex: oil, tar, blood)
2. Contain many smaller grooves to channel air and water quickly on smooth pavement
3. A long wheel base _______________ the turning diameter
4. Elevated regions to channel water away and provide traction with the ground
5. Formed when someone breaks suddenly and locks the wheels, Provides evidence of the distance when breaks were applied, and can help calculate the velocity

5 Matching Questions

1. Tire Scrubs
2. Size of the Vehicle
3. Tread Pattern and Measurements
4. Candidate Vehicle
5. Latent Print

1. a Used to identify the type of tire and perhaps the make and model of the car.
2. b Determined by the Track Width, Wheel Base, and Turning Diameter
3. c Left on asphalt or concrete roads by manufacturers' oil used to keep tires soft and pliable
4. d Produced by a damaged or overloaded tire or tires during or immediately after impact, they are usually curved and irregular in width. They may have striations that look like stripes, and they can determine the area of impact
5. e Vehicle of suspect

5 Multiple Choice Questions

1. The center of each tire to the center of the opposite tire
   1. Track Width
   2. Touring Tires
   3. Central Rib
   4. Ribs
2. The distance between the center of the front axle and the center of the rear axle
   1. Ribs
   2. Increases
   3. Wheelbase
   4. 3 meters
3. Measuring the weight of the car, the texture of the road surface, and the length of the skid mark, investigators can determine the approximate speed of the vehicle when the breaks were pressed
   1. Touring Tires
   2. Skid-to-Stop Formula
   3. Skid Marks
   4. Size of the Vehicle
4. Unique Characteristics of tires
   1. Tread Pattern and Measurements
   2. Ridges and Grooves
   3. Turning Diameter
   4. Wear patterns and pebbles embedded in the grooves
5. A Database contains information on __________ ,___________, and ______________
   1. Track Width, Wheel Base, and Turning Diameter
   2. Turning Diameter
   3. Tread Pattern and Measurements
   4. Ridges and Grooves

5 True/False Questions

1. Tire Impressions → Can identify the make and model of the vehicle

   True        False

2. Central Rib → Left on asphalt or concrete roads by manufacturers' oil used to keep tires soft and pliable

   True        False

3. Nature of Impressions → Can identify the make and model of the vehicle

   True        False

4. Turning Diameter → Another name for Turning Diameter

   True        False

5. Turning Radius → Another name for Turning Diameter

   True        False