The GS is available with Lexus’s advanced pre-crash safety system with drivermonitor with eye open/close detection system (Optional). Using sophisticatedradar and camera technology, it will warn you if you are not facing forward or if youreyes close for a certain length of time, and activate pre-crash brake assist andpre-crash seatbelts if it senses a collision is imminent. This radar technology is alsoused for the sophisticated radar cruise control (Optional). To help you concentrateon the road ahead, the head-up display (Optional) projects driving data onto thewindshield, while the Blind Spot Monitor System (Optional) uses radar installed inthe rear bumper to warn you of unnoticed overtaking vehicles.