Lexus has introduced driving assistance and advanced pre-collision support features for its all-new Lexus LS flagship sedan, including world-first technology that can pinpoint the location of a pedestrian and automatically control the car’s steering and braking.
Lexus says the new features, now standard for LS 500 and LS 500h Sports Luxury grades, provide safer and more secure driving in a wider range of situations, and expand the capabilities of the standard Lexus LS pre-collision system that uses a radar and camera to detect pedestrians and vehicles ahead.
The new pedestrian alert operates if there is a possibility of the vehicle colliding with a pedestrian ahead. The position of the pedestrian is shown in an animated graphic on the vehicle’s head-up display.
Active steering assist is designed to determine when there is a high possibility of collision with a pedestrian in the lane of travel or with some continuous structures, such as a guardrail.
If it calculates that brake control alone will be insufficient to avoid a collision, the system can provide steering assistance in addition to activating an alert and applying the brakes.
When active steering assist is deployed, the car will only move within a clearly marked lane. The system automatically checks for any vehicles in the car’s blind spots, including motorcycles.
Lateral side radar pre-collision is designed to detect vehicles approaching diagonally at up to 50 metres in front of the Lexus LS. It alerts the driver through the head-up display and can trigger brake assist.
Front cross-traffic alert is designed to help prevent collisions at intersections by using side-scanning radars. It can detect vehicles or bicycles approaching from either the left or the right at up to 7 metres from the front of the Lexus and travelling between 10 and 60 km/h.
Lane-tracing assist operates with the vehicle’s standard all-speed radar active cruise control. Lexus says it can significantly reduce the burden on the driver by providing seamless lane-keeping support on roads with many bends, or in traffic jams.
As well as camera detection of lane markings, the system will trace the path of the vehicle ahead to enable assistance even when lines cannot be recognised, for example when driving in low-speed congestion with little space between vehicles.
The system is co-ordinated with the head-up and multi-information displays to give the driver clear notification of the status of the support being provided.
Lane-tracing assist builds on the existing lane departure alert with steering assist, technology that can warn the driver when the vehicle might depart from its lane and provide steering assistance to help keep the vehicle in its lane.
Road-sign assist uses a camera to acquire speed-limit information, which it presents on the vehicle’s head-up and multi-information displays, encouraging safe driving and reducing the risk of the driver failing to recognise signs.
Other safety systems in the Lexus LS include adaptive high-beam system for the LED headlamps, blind-spot monitor, rear cross-traffic alert, pop-up bonnet and tyre pressure monitoring system.