The Lexus IS is now available with a new Advanced Technology Pack that adds the company’s Pre-Crash Safety system, Adaptive Cruise Control, Lane Departure Assist and Automatic High Beam.

The pack is available only for the top-of-the-range Premier version of the IS 250 and IS 300h, and costs £1,540.

The Pre-Crash Safety (PCS) system uses a millimetre-wave radar sensor operating over a 20-degree radius to detect obstacles in the vehicle’s path, combined with other sensors around the car to measure speed, steering angle, yaw rate and other aspects of the vehicle’s current state.

If the system detects a collision is likely, a warning is given to the driver and the seatbelt pre-tensioners are activated.  When the driver brakes, the system supplements braking effort to ensure the vehicle stops in time.  However, if the driver fails to brake in time, the system will apply the brakes automatically in an attempt to reduce the impact speed.

Adaptive Cruise Control (ACC) functions in two modes: constant speed control operates similarly to conventional cruise control systems, and can be activated at speeds over 31mph.  In vehicle-to-vehicle distance control mode, the system matches the speed of the vehicle in front, braking when a vehicle pulls in front, and accelerating away again once the way is clear.

Lane Departure Alert (LDA) uses a camera mounted on the rear-view mirror to monitor road markings.  If it detects the car is straying from its lane without indicating, a buzzer sounds and a warning appears on the instrument display.

Automatic High Beam (AHB), as its name suggests, uses the car’s front-mounted camera to automatically switch the headlights to low beam when it detects an oncoming car, or when following another vehicle.

The Advanced Technology Pack costs £1,540 and is available on either the £35,495 IS 250 Premier or £38,495 IS 300h Premier.