Types of Skid Marks Quiz

Questions and Answers

What characterizes Anti-lock Braking System (ABS) scuff marks?

They appear as consistent, solid marks.

They are a series of heavy skid marks with uniform spacing.

They indicate a sudden tire direction change due to collision forces.

They are intermittent and may disappear within 15-20 minutes. (correct)

How do intermittent skid marks differ from other types of skid marks?

They are caused by rapid acceleration from a stop.

They have long gaps of more than 15 feet. (correct)

They appear in shallow trenches.

They indicate a tire's rotation without slipping.

What leads to the formation of skip skid marks?

Sustained locked tire skidding.

Sudden load shifts from braking hard. (correct)

Locked tires moving over liquid surfaces.

Rapid application and release of brakes.

Which description accurately defines offset skid marks?

They show a sudden tire direction change due to collisions. Signup and view all the answers

What is a key feature of a squeegee mark?

It typically disappears quickly and is temporary. Signup and view all the answers

Furrow marks are associated with which of the following?

Deep trenches in soft surfaces. Signup and view all the answers

What causes a scuff or yaw mark?

Loss of traction due to excessive speed or oversteering. Signup and view all the answers

Which characteristic defines acceleration scuff marks?

They result from gradual acceleration from a stop. Signup and view all the answers

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.

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.