Volvo makes further progress on intelligent safety systems for trucks

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As of November 2015, there is an EU-wide legal requirement for new two- and three-axle heavy trucks to be equipped with an automatic emergency brake. The aim is to reduce accidents in which a truck drives into the back of a vehicle in front of the truck, an accident scenario that accounts for about one-fifth of all road accidents involving trucks. At present, legislation requires that the emergency braking system must reduce the truck´s speed by 10 km/hr (6.2 mi/hr). Next year, this will be tightened to 20 km/hr (12.4 mi/hr).

Volvo Trucks has developed a system that goes well beyond both current and future legal requirements. The system, which was introduced in 2012, focuses primarily on alerting the driver to the risk of a collision. The aim is for the driver to quickly assess the situation and avoid an accident. The emergency brake is only used if it is absolutely necessary, and it is deployed extremely quickly. The truck's speed can be cut from 80 km/hr (50 mi/hr) to 0 in about 40 m (131 ft).

The system monitors the vehicles in front with the help of camera and radar technology and functions irrespective of whether it is sunshine, mist, fog or darkness. If there is a risk of collision, the driver is alerted via gradually escalating light and acoustic signals. If the system does not detect a response from the driver, the truck automatically starts braking gently. If the driver still does not respond, the emergency brake is deployed until the vehicle comes to a complete standstill. After a further five seconds without any movement of the steering wheel or other reaction, the handbrake is automatically engaged, a safety measure to prevent the truck from rolling if the driver is in shock or is unconscious.

When the emergency brake is deployed, the brake lights start flashing to warn vehicles to the rear, and when the truck's speed drops to 5 km/h (3.1 mi/hr) the flashing emergency warning lights are also activated. Volvo's system also functions on winding roads and can differentiate between roadside guard rails  and genuine obstacles such as vehicles including motorbikes. Source

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