While no testing has been conducted on the 2009 Lexus 450h by the National Highway Traffic Safety Administration (NHTSA), the Insurance Institute for Highway Safety (IIHS) gives it top ratings in front and side impact tests, allowing occupants to feel safe and secure while traveling.
According to Cars.com, those who purchase this particular Lexus 2009 vehicle will find "VDIM coordinates the electronic stability system, antilock brakes, electronic steering and electronic brakes to aid driver control" as standard equipment. Also, the 2009 Lexus has "a full complement of electronic safety features [that] centers around the  Lexus' Vehicle Dynamics Integrated Management system."
"Adaptive cruise control [that] can sense impending collisions and alert the driver," and "an adaptive front lighting system swivels the headlights several degrees during turns to better illuminate corners” are all optional safety equipment on the 2009 Lexus.
According to ForbesAutos, the 2009 450h has some minor visibility problems, including a "high dashboard and windowsills hamper...outward visibility." On the other hand, Kelley Blue Book remarks that a "well-proportioned glass area provides good outward visibility." In addition, Kelley Blue Book reports installed on the 2009 Lexus GS 450h are "xenon HID headlamps and quick-responding LED taillamps [that] make it easier for you to see and be seen, day or night."