MAN's emergency braking system uses radar sensors and cameras to analyse the road ahead.
The combined information from a radar sensor in the front end of the truck and a windscreen-mounted camera is used. This sensor fusion lets the system make interpretations of situations on the road. Vehicles in front and stationary obstructions can be identified faster and with greater accuracy. The system therefore gains time to initiate emergency braking earlier if required. In an emergency, the vehicle can slow down quicker and come to a halt much sooner. Stationary objects are more difficult to recognise with certainty than vehicles in front. Therefore the system must distinguish relevant objects (such as a broken-down vehicle or a stationary vehicle at the tail-end of a traffic jam) from irrelevant objects (road signs, tunnel entrances, bridges). In order to prevent an emergency braking being carried out in error, the emergency braking assistant does not react until the situation is with a very high degree of probability correctly interpreted. The system makes a more intensive and therefore longer analysis in order to make absolutely sure that there really is a stationary obstruction in the lane ahead.
The design of the EBA emergency braking system follows the principle that the driver should always be in control, and this ensures a high level of driver acceptance. The interaction of the radar and camera reduces the risk of unjustified warnings. This will ensure that the driver is bothered as little as possible with warning signals. Following his own assessment of the situation the driver can overrule the emergency braking system when there is a warning or even when emergency braking is already in progress. The driver can use the accelerator or brake or operate the indicator to start changing lanes and in this way cancel the warning or abort automatic braking. When there is no further risk of collision, for example, when a slow-moving vehicle has moved onto the hard shoulder, the EBA cancels the emergency braking procedure.
The emergency breaking sequence begins by the EBA reacting to a detected emergency braking object and to the absence of driver response (either a change of lane or braking). The driver is warned first by a penetrating warning tone and a message on the display. At this time, the brake lines are pre-filled to shorten the response. At the same time the brake lights are activated in order to warn the vehicles behind. The EBA also cuts engine torque as early as the warning phase. Should the driver not react, the brakes will be applied automatically as a warning (warning braking). If the risk of collision is still likely and the driver is failing to react, the EBA initiates emergency braking which under ideal conditions prevents driving into the obstacle, even from full speed at 80 km/h (50 mi/h). In the event of emergency braking, the Emergency Stop Signal (ESS) activates the brake lights and the hazard warning lights which flash rapidly (emergency braking flashing) and thus signal an emergency situation to vehicles behind.
The new Lane Guard System (LGS) uses cameras to detect lane changes. At speeds above 60 km/h (37 mi/h) the LGS monitors the vehicle's position with respect to the lane and warns the driver should he accidentally cross the lane markings. The system detects autonomously when lane conditions change. However, a reliable warning is only possible when right-hand and left-hand lane markings are present and the lane exceeds a minimum width. The system also considers that many drivers for the sake of safety like to drive on the outside of the lane. The system adjusts automatically to whether the country drives on the left or on the right. Source: http://www.corporate.man.eu/en/press-and-media/presscenter/The-new-generation-of-safety-systems-at-MAN-217856.html