📖 The Quick Answer
When you are on a Super Cruise-mapped divided highway, a green light bar on the steering wheel signals you can take your hands off. The car steers, brakes, accelerates, and (on supported models) changes lanes automatically when you signal. An infrared driver-monitoring camera makes sure your eyes stay on the road.
⚙ How It Works (Sensors and Algorithm)
Three things make Super Cruise possible. First, LiDAR-mapped highways with high-definition map data accurate to about 10 cm. Second, a long-range forward radar plus a forward camera and additional short-range radars for lane changes. Third, an infrared driver-monitoring camera on the steering column that tracks eye gaze and head position in real time. If you look away too long, the system escalates from a green-to-red light bar to seat vibrations to a controlled stop.
🛡 What It Protects Against
Driver fatigue on long highway trips, lane-change conflicts, and rear-end collisions. Super Cruise drivers in GM internal data have logged hundreds of millions of hands-free miles with strong safety statistics.
⚠ Limitations and When It Fails
Works only on the 750,000+ miles of mapped divided highways and selected non-divided routes (as of late 2025). Will not work on city streets, in construction zones, in heavy rain or snow, or when lane lines are obscured. Requires an active GM OnStar / Super Cruise subscription after the included trial.
🚗 Which Vehicles Have It
Available on most 2022+ Cadillac models (Escalade, CT5, CT4, LYRIQ, OPTIQ), most 2024+ Chevrolet Silverado and Tahoe/Suburban trims, GMC Sierra and Yukon, Buick Enclave 2025+, and Cadillac CELESTIQ. Trim levels vary.
🔧 Related TSBs and Recalls
Multiple OTA updates have refined Super Cruises behavior in construction zones and tightened eyes-on-road requirements. Most fixes are software pushed automatically.