Track vs Tread Tire Track path left in the soil by the wheels of a vehicle Tire Tread pattern of tread design on tire Tracks Tracks can be used to indicate Direction of travel Change in direction ID: 425848
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TIRE TRACKSSlide2
Track vs. Tread
Tire Track: path left in the soil by the wheels of a vehicleTire Tread: pattern of tread design on tireSlide3
Tracks
Tracks can be used to indicate:Direction of travelChange in directionTread wear patternSlide4
Direction and Change of Travel
and moved toward point 2
This vehicle began at point 1
The vehicle stopped and backed up to point 3
The vehicle stopped at point 3 and then moved forward to point 4Slide5
Tire Tread Patterns
Records are kept of different tire tread patterns so that tires can be traced to different sizes of tires and often different makes and models of vehiclesSlide6
Preserving Tracks
Photograph the track first!! If a cast cannot be made, photographs will be very importantMake sure to use a scale that will show in the photographsDental stone is used to make a castIf a track is in snow, a special wax is used to make the track hard enough to castSlide7
Measuring Tracks
Tracks must be measuredTire Track Width: distance in inches between the middle of the two front tires or the two back tiresTire track width is used to identify the type of vehicleSlide8Slide9
Measuring Tracks
Tread width: distance in inches across the tread patternTread widths should be measured on both the front and back tires since some vehicles may use different tires