The NHTSA (National Highway Traffic Safety Administration) has not yet crash-tested the 2010 Lexus LS, but the IIHS (Insurance Institute for Highway Safety) has awarded the LS sedans a "good" rating for their front-impact protection systems.
Lexus outfits its top-end luxury sedan with a wealth of standard and optional safety features. On all LS sedans, standard features include front side airbags, dual front knee bags, full-length side-curtain bags, and active headrests. Rear-seat side airbags are available. Vehicle Dynamics Integrated Management (VDIM), an advanced version of electronic stability control, is standard, and it's integrated with traction control and anti-lock brakes.
Automobile notes Lexus offers a "dynamic radar control" cruise control system that automatically maintains a safe distance from the car ahead when driving on the highway. An optional Pre-Collision System is bundled with the advanced cruise control; Cars.com says it can prepare the LS sedan "when a collision becomes imminent by priming the brake system, tightening the seat belts and stiffening the air suspension."
Lexus now offers an Enform and Safety Connect system on subscription basis; the telematic systems notify Lexus if the vehicle is involved in an accident and summon emergency personnel automatically.
The 2010 Lexus LS features a self-parking system that steers the vehicle into a parallel or row parking spot as the driver backs up; some will find it helpful, but to others it's a gimmick. Edmunds finds that it "takes considerably longer than a skilled city dweller would like." Parking the LS the old-fashioned way is fairly easy anyway; as ConsumerGuide reports, "visibility is fine all around."