Road Safety & Crash Investigation

Question 1

The Automotive safety research multiple disciplinary team consists of everyone except…?
Psychologists
Civil engineers
Mechanical engineer
Medical officer
Forensic officer

Answer 1

Forensic officer

Question 2

Road safety officers look at all of the following evidence except…
Tyre marks
Scrape marks
Fluid patches
Debris
Vehicle positions
Human remains

Answer 2

Human remains

Question 3

How is a vehicle inspected?

Answer 3

Exterior parts
Intrusion Measurements
Deployment of airbags
Tyre condition
Interior points of contact
Seatbelt wearing evidence
Airbag control module

Question 4

What are the steps of reviewing a motor vehicle accident?

Answer 4

Bring all the data together
Decide what occurred
Identify contributing factors
Identify what might have mitigated it
Identify interventions to prevent it

Question 5

What are tyre marks?

Answer 5

It is a production of friction generated heat

Question 6

What are the differences of tyre marks on dry roads vs wet roads

Answer 6

• Dry road – bitumen heated and smeared on the road
- Darker than the road surface
- Surface dependent
• Wet road – water heated and removed, road ‘steam cleaned’
- Lighter than the surface of the road

Question 7

What are skid marks?

Answer 7

Parallel striations
Mostly straight
Caused by wheels slipping during breaking

Question 8

9. What are yaw marks

Answer 8

a. Diagonal curved striations

b. Made by wheels that are both sliding and rotating (Vehicle is sliding sideways)

Question 9

10. What is the electronic stability control (ESC)?

Answer 9

a. Used in cars for safety, preventing cars from losing control as often and leaves les YAW marks

Question 10

11. How is speed data used in research?

Answer 10

a. Control the study of travelling speed and risk of casualty crash

Question 11

12. How is the speed of vehicles involved in a casualty crash measured?

Answer 11

a. Calculated by reconstruction of the scene