07. Identification of Hazards
L3 09 L HARA Identification Of Hazards
Table with the Hazard Identification
Function | Lane Departure Warning (LDW) function shall apply an oscillating steering torque to provide the driver haptic feedback. |
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Malfunction | Actor effect is too much. |
Malfunction details | The LDW function applies an oscillating torque with very high torque (above limit). |
Hazardous event | Collision with other vehicle. |
Event details | High haptic feedback can affect driver's ability to steer as intended. The driver could lose control of the vehicle and collide with another vehicle or with road infrastructure. |
Summary description | The LDW function applies too high an oscillating torque to the steering wheel (above limit). |
Lane Keeping Assistance Function Hazard Identification
In terms of the lane keeping assistance function, we previously developed an example where the driver was misusing the function by taking both hands off the wheel and incorrectly treating the car as a fully autonomous vehicle.
In this example, the malfunction is that the lane keeping assistance function is always activated.
Here as well, there is potential for a vehicle collision. Using the list of potential accidents, we will choose "collision with other vehicle".
The lane keeping assistance function should add extra steering torque for a limited amount of time and then stop providing extra torque. That way, the driver cannot treat the function as if it were meant for fully autonomous driving.
Malfunction (Deviation) Guidewords Table
Hazardous Event Guidewords Table
Quiz: Malfunction Guidewords
Lane Keeping Assistance Malfunction Guide Word
SOLUTION:
function always activatedQuiz: Hazardous Event Guidewords
Hazardous Event Guide Words
SOLUTION:
collision with other vehicleQuiz: Vocabulary Check
Functional Safety