Podcast
Questions and Answers
What characterizes Anti-lock Braking System (ABS) scuff marks?
What characterizes Anti-lock Braking System (ABS) scuff marks?
How do intermittent skid marks differ from other types of skid marks?
How do intermittent skid marks differ from other types of skid marks?
What leads to the formation of skip skid marks?
What leads to the formation of skip skid marks?
Which description accurately defines offset skid marks?
Which description accurately defines offset skid marks?
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What is a key feature of a squeegee mark?
What is a key feature of a squeegee mark?
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Furrow marks are associated with which of the following?
Furrow marks are associated with which of the following?
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What causes a scuff or yaw mark?
What causes a scuff or yaw mark?
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Which characteristic defines acceleration scuff marks?
Which characteristic defines acceleration scuff marks?
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Study Notes
Types of Skid Marks
- ABS Scuff Marks: Indicate hard braking from a vehicle with anti-lock brakes; appear faint and intermittent, usually fading within 15-20 minutes.
- Intermittent Skid Marks: Characterized by heavy marks with long gaps exceeding 15 feet; result from a driver applying and releasing brakes rapidly, with uniform spacing of 3-4 feet.
- Skip Skid Marks: Display irregular intervals; caused by sudden load shifts when braking, often seen in bouncing trailer vehicles or on bumpy roads.
- Offset Skid Marks: Suggest sudden tire direction changes due to collision forces; help pinpoint the exact location of impact during an accident.
- Squeegee Marks: Temporary strips of dry pavement left by locked tires skimming water off the road; they disappear quickly after the vehicle passes.
- Furrow Marks: Trench-like impressions created by locked tires on soft surfaces (gravel, sand, dirt); initially shallow but deepen as the vehicle continues to skid.
- Scuff or Yaw Marks: Evidence of loss of traction due to excessive speed or oversteering; characterized by tires sliding sideways, making distinctive marks on the pavement.
- Acceleration Scuff Marks: Result from rapid acceleration starting from a stop; show gradually fading dark tire marks indicative of quick speed changes.
- Tire Print: Impression left by a tire rolling over softer materials; provides identifiable patterns that match the tire tread, crucial for vehicle identification.
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Description
Test your knowledge about different types of skid marks left by vehicles, including Anti-lock Braking System (ABS) scuff marks and intermittent skid marks. This quiz will challenge your understanding of how these patterns form and what they indicate about braking behavior.
