Pedestrian collision avoidance for buses

| Transport

The latest version of Daimler’s Active Brake Assist features an ability to recognise pedestrians and cyclists to avoid low speed collisions.

Daimler Buses is opening a new chapter in commercial vehicle safety and assist systems with the new Active Brake Assist 4 (ABA 4) with pedestrian recognition: the world’s first emergency braking assistance system in a bus to automatically brake for pedestrians. This marks another whole new level of performance for the system. Gustav Tuschen, Head of Development at Daimler Buses said, “Active Brake Assist 4 with pedestrian recognition marks a milestone in the development of assistance systems for coaches.”

Avoiding accidents and protecting more vulnerable road users are central facets of safety development at Daimler Buses. The new Active Brake Assist 4 with pedestrian recognition very much reflects this, warning the driver visually and audibly of any potential collision with pedestrians and at the same time automatically triggering partial braking.

This gives the driver every opportunity to prevent a collision with a pedestrian: the driver can warn the pedestrian using the horn, initiate maximum full-stop braking or steer to avoid the collision.

Multi-mode radar systems

In technical terms, ABA 4 with pedestrian recognition is based on new-generation radar technology which also features in the latest Mercedes-Benz cars and trucks. The electronically scanning multi-mode radar comprises long and short range radar systems.

The long range radar registers multi-track vehicles and stationary obstacles at a maximum distance of up to 250 m in a direct line in front of the coach, single-track vehicles such as bicycles at up to 160 m and pedestrians at up to 80 m. The short range radar has a maximum range of 70 m and is even able to recognise pedestrians and vehicles to the sides ahead of the coach.

The new Active Brake Assist 4 with pedestrian recognition is the logical evolution of the existing, tried and tested Active Brake Assist 3, which already carries out maximum full-stop braking for vehicles ahead and for stationary obstacles. Mercedes-Benz had previously developed earlier iterations of the system with the first Brake Assist appearing back in 2008 to Active Brake Assist 3, which was introduced in 2014.

Safety experts understand that Active Brake Assist can save lives. Which is why the legislators reacted to the developments at Daimler Buses: since November 2015, emergency braking systems have been mandatory for newly registered heavy duty coaches and trucks. Even the standard AEBS version from Daimler Buses can do more than the legislators require. The new Active Brake Assist 4 with pedestrian recognition sets new standards with even higher performance.

Available in spring 2018

ABA 4 will become available in the spring of 2018 for the recently presented Mercedes-Benz Tourismo. The Setra touring coaches, including the ComfortClass 500 and the TopClass 500, will also have ABA 4 on board. ABA 4 is available free of charge to customers selecting the popular autonomous intelligent cruise control option (ART), which provides the necessary radar technology for ABA 4.

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