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Bosch and TomTom partner on high-precision maps for highly automated driving

Bosch and TomTom have agreed to collaborate on innovative mapping technology for automated driving. Under this agreement, TomTom is designing the necessary maps, while Bosch, on the basis of its systems engineering work, is defining the specifications these maps have to meet.

The maps are already being used in the automated vehicles Bosch is testing on certain public roads in Germany (A81) and in the United States (I280). High precision maps are a necessary enabler for deploying automated driving on freeways by 2020, said Bosch board of management member Dr. Dirk Hoheisel. Jan Maarten de Vries, Vice President Automotive at TomTom, said that by the end of 2015, the company wants to have new high-precision maps for automated driving for all freeways and freeway-like roads in Germany. Road coverage will subsequently be extended to the rest of Europe and North America.

Maps for highly automated driving and the maps used in current navigation systems differ primarily in two respects: (1) accuracy is significantly higher—down to decimeter precision; and (2) the map material for highly automated driving consists of multiple layers.

  • The traditional base navigation layer is used to calculate routes from A to B, including the sequence of roads to be driven.

  • The localization layer uses a novel positioning concept providing highly accurate map data, which the automated vehicle uses to accurately calculate its position within a lane. To do this, the vehicle compares its sensed environment with the corresponding information in the localization layer. In this way, the vehicle can accurately define its position relative to the road and its surroundings.

  • On top of the localization layer, the planning layer contains not only attributes such as lane divider types, traffic signs, speed limits, etc., but also 3D information about road geometry, including curves and slopes. With the help of this very detailed lane information, the automated vehicle can decide things such as when and how to change lane.

In highly automated driving, safety and comfort depend crucially on map material that is up to date. For example, up-to-the-minute speed-limit information has to be available instantly. Only then can vehicles select the best proactive driving strategy.

In this regard, Bosch and TomTom rely on several elements and services to keep the map data up to date: the TomTom mapping fleet will continue to be regularly on the road, accurately mapping new roads and routes. And to register recent changes on the roads, such as changed lane configurations or new traffic signs, TomTom and Bosch plan to use feedback from fleets of vehicles equipped with the necessary sensors. Information about changed road conditions captured this way will be transferred to a server, verified, and entered in the digital map database. The updated map will then be fed back to the highly automated driving vehicle, enabling it to see effectively beyond its sensors.

Bosch and TomTom said that the new collaboration in the area of maps for highly automated driving is an extension of an already existing, successful partnership. For Bosch’s connected horizon, TomTom also provides dynamic map information via its real-time service backend—albeit without any localization layer. In this way, the connected horizon makes it possible to predict the route ahead and adapt driving strategy accordingly.

This solution was demonstrated for the first time in 2014, at the IAA Commercial Vehicles trade show in Hanover. The system recognizes potential black spots behind hills, or the start of a traffic jam, at an early stage, and automatically reduces the speed of the vehicle well in good time. This considerably reduces the risk of rear-end collisions. In addition, smoother driving behavior means more comfort for the driver and improved fuel efficiency for the vehicle.

Comments

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Self-driving BEVs are clearly coming. In Tesla's fresh announcement about a more affordable 70k USD Model S and a more powerful one doing 0 to 60 mph in 2.8 sec Musk also said they were working to make the BEV drive train durable enough for one million miles. See http://www.teslamotors.com/blog/three-dog-day

One million miles is five times longer than any modern gasser or hydrogen car will ever do without drive train replacement. Most drivers only do 15,000 miles per year so 200,000 miles is enough for a conventional privately owned car. However, a taxi self-driving car could do 100,000 to 150,000 miles per year and this is why we need the BEV drive train to last one million miles so they can be in service for 7 to 10 years before needing replacement instead of 18 to 24 months.

Also forget about PHEVs. They will destroy the planet because they use gasoline or diesel. In 50 years the planet will have 10 billion people that can all afford driving a car. You can either have 10 billion human operated PHEVs driving around using the exact same amount of gasoline as the 1.2 billion non-PHEVs that are driving around today. Alternatively you can use 1 billion self-driving taxi BEVs and heavy duty trucks to do the necessary land transportation without using a drop of oil.

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