Highly accurate map content for driver assistance

For future mobility players who want to improve their driver assistance systems, the TomTom ADAS Map provides relevant map data to work in conjunction with onboard sensors.

Leveraging the navigation map for driver assistance systems

Traditional driver assistance systems use sensors to control speed and steering. However, when roads are not flat and straight, adding a map to the equation is required. As this report from IHS Markit explains “new sources of data can be employed to extend the effective horizon of these applications beyond the line-of-sight limitations of the sensor technologies on which they are primarily based. Map data are one way to extend that horizon”. Since 2012, our navigation maps also contain additional data which can be used as a predictive sensor to anticipate the road ahead. This is useful for a range of use cases such as predictive cruise control, traffic sign recognition, path planning, speed optimization and more.

What is the TomTom ADAS Map?

The traditional navigation map contains information about roads, addresses and everything else you need for turn-by-turn navigation. With the TomTom ADAS Map, we can provide highly accurate map content to improve the functionality of driver assistance systems. The TomTom ADAS Map consists of several features on top of the basic road network that provider relevant and detailed information of the road. These include gradient, curvature, traffic signs and lane connectivity at intersections and junctions.

The advantages of TomTom ADAS Map

Every single feature of the TomTom ADAS map has its own unique advantages and added value to traditional driver assistance systems:

  • Leveraging curvature information from the TomTom navigation map, a vehicle can anticipate a sharp turn. This avoids harsh breaking that would happen when relying only on sensors.
  • Gradient information can be used as input for gear selection and speed control. This helps vehicles drive efficiently both uphill and downhill, saving time and money.
  • Many cars today rely on a camera to recognize speed limits and traffic signs. But the view can be blocked by another large vehicle, unreadable due to downpour or a sign can be misinterpreted. Traffic signs from the TomTom navigation map correctly anticipate changes in the speed limit, regardless of the circumstances. This is very relevant for NCAP safety ratings.
  • For guidance at junctions, roundabouts and intersections, lane information is used to guide the vehicle in the correct lane and avoid last-minute lane changes. In fact, last-minute lane changes are a key cause of accidents, and providing precise lane-level guidance information to the driver can help improve safety.

How TomTom improves safety, comfort and efficiency of ADAS

Knowing what is ahead of the vehicle is not enough to fully benefit from TomTom Advanced Driver Attributes. Rather, the map information needs to be exposed to the driver assistance software. For this, TomTom has developed a suite of so-call horizon software to deliver map information to the relevant Electronic Control Units (ECU). This is available in a proprietary format and per ADASIS v2 standard.

By helping vehicles anticipate the road ahead, TomTom takes driver assistance systems to the next level.

TomTom ADAS Map Product Sheet