See also:

Supplemental Restraint System
Supplemental Restraint System (SRS) SRS warning light As an enhancement to the three-point seat belts, your Volvo is equipped with a Supplemental Restraint System (SRS). Volvo's SRS consists of ...

Limitations
Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if the driver is not looking straight ahead may make the visual warning signal in the windshield difficult to see. ...

Driver Alert Control (DAC)– introduction
This function is intended to alert the driver if his/her driving becomes erratic, such as if the driver is distracted or fatigued. NOTE The camera has certain limitations, see page 160. A ...