CAE Automotive Safety Systems 2

Question 1

What is the primary function of an Electronic Stability Control (ESC) system?

Accepted Answer

Detect and reduce loss of traction to prevent skidding

Answer

ESC detects loss of traction by comparing driver steering input to actual vehicle direction, then selectively applies brakes to individual wheels to correct oversteer or understeer.

Question 2

Which sensor type is most commonly used in tire pressure monitoring systems (TPMS) to directly measure inflation pressure?

Accepted Answer

MEMS-based piezoresistive pressure sensor

Answer

Direct TPMS uses MEMS-based piezoresistive pressure sensors mounted inside the wheel that transmit pressure data wirelessly to the vehicle's ECU.

Question 3

In a frontal collision, at what approximate deceleration threshold (in g) does a typical supplemental restraint system (SRS) airbag deploy?

Accepted Answer

8–15 g

Answer

Airbag deployment is typically triggered when crash sensors detect decelerations of roughly 8–15 g sustained for a minimum duration, indicating a severe collision.

Question 4

What does the 'time-to-collision' (TTC) metric measure in forward collision warning systems?

Accepted Answer

Estimated time before the host vehicle contacts the lead vehicle at current speeds

Answer

TTC is calculated as the gap distance divided by the closing speed, estimating how many seconds remain before a rear-end collision if no action is taken.

Question 5

Which standard governs functional safety requirements for automotive electrical and electronic systems?

Accepted Answer

ISO 26262

Answer

ISO 26262 is the international standard for functional safety of road vehicle E/E systems, defining Automotive Safety Integrity Levels (ASILs) from A to D.

(CAE) Certified Automotive Engineer Practice Test

(CAE) Certified Automotive Engineer Practice Test

CAE Automotive Safety Systems 2