2006 Lexus GS Road Test

The new model's Adaptive Front lighting System (AFS), similar to that introduced on the RX 330, bends the headlamp beams around

The new model's Adaptive Front lighting System (AFS) bends the headlamp beams around curves as the steering wheel turns. (Photo: Trevor Hofmann, Canadian Auto Press)

curves as the steering wheel turns, lighting what would otherwise be a dark road ahead. This feature proved to be extremely helpful when returning from a long trip at night at the wheel of an LS 430, lighting up every corner ahead, each of which would have had me straining to see in the dark otherwise.

The GS's back-up camera effectively does the same thing by extending a driver's vision, day or night. Other Lexus models make use of this system as well, some of which I've tested while backing out of my own driveway and from shopping mall parking spots. It's nice not having to worry about running over bicycles, or more importantly children, when backing up. The screen is integrated into the navigation display, which also does multiple-duty as the car's infotainment system controller.

Big Brother opponents might initially get spooked by the new model's optional Pre-Collision System (PCS), which acts on behalf of the driver to apply emergency braking and prepare the car for a crash. But not to worry, the system merely makes use of a millimeter-wave radar sensor to detect obstacles in front before

Big Brother opponents might initially get spooked by the new model's optional Pre-Collision System (PCS). (Photo: Trevor Hofmann, Canadian Auto Press)

signaling a pre-collision system computer with variables such as vehicle speed, steering angle and yaw rate inputs, which in the end decides whether a collision is unavoidable. Once a digital decision is made the system preemptively retracts the front seat belts, adjusts the seats and applies Brake Assist to reduce the speed of impact. While it sounds complicated, PCS is one of those technologies that you don't have to read the manual beforehand to initiate. It will go about its business all on its own, without any input from the driver.

With safety in mind, the new GS gets knee airbags for front occupants, plus standard front and rear side curtain airbags. The standard front airbags are of the new-generation variable-force variety.