Types of Impressions
Types of Tire Marks
Vehicle Identification
Shoe Impressions
Impression Collection
100

I am making this type of impression as I touch my hand to the table. 

What is a latent impression? 

100

This type of tire impression is always in a straight line.

What is a skid mark? 

100

This is the measurement taken from center-to-center below the front bumper of the vehicle. 

What is the front track width? 

100

This is another name for the shoe tread. 

What is the shoe's sole? 

100

This makes latent bloody footprints (bloody footprints that have been cleaned up) visible. 

What is Luminol? 

200

I make this impression when I touch my homework after eating Hot Cheetos. 

What is a patent impression? 

200

These impressions often have diagonal striations. 

What are tire scrubs? 

200

This is the most accurate measurement used to measure vehicles. 

What is a millimeter? 

200

This is roughly what I can measure about a person when I measure the size of their shoe print impression. 

What is the person's height? 

200

This lifting method can reveal the fine dust left by a dry shoe. 

What is electrostatic lifting? 

300

This is the type of impression a Jeep leaves behind on a muddy dirty road. 

What is a plastic impression? 

300

This type of impression is curved, but still has visible rib and groove patterns. 

What is yaw marks? 

300

Pick-up trucks typically have a larger THIS to haul heavy loads. 

What is a rear track width? 

300

This is another name for a person's pattern of moving. 

What is gait? 

300

This can allow for multiple lifts of the same impression. 

What is gel lifting? 

400

This is a type of impression that is unique to you. 

What is a fingerprint? 

400

Tire marks are considered this type of impression. 

What are patent impressions?

400

This is the distance between the vehicle's axles. 

What is the wheel base? 

400
A shoe impression would be deeper, darker, and heavier HERE if the person walked heel to toe. 

What is at the heel? 

400

This angle is used when photographing foot impressions to reduce distortion. 

What is a perpendicular angle? 

500

This is the type of impression my dirty shoes leave on my kitchen floor. 

What is a patent impression? 

500

This is the most reliable type of tire mark for identifying the vehicle. 

What are skid marks? 

500

This is the minimal space required for a vehicle to make a 360-degree turn. 

What is the turning diameter? 

500

These are 3 factors that personalize a shoe impression. 

What are...
-the way the person walks

-body weight 

-the shape of their foot

-unique holes, cuts, or debris of the shoe

-injury or handicap

-age of person

-size of stride

-person's activity

500

This method is used to re-create the shoe that leaves behind a plastic impression. 

What is a casting method?