ADASIS and SENSORIS protocols


The ADASIS Forum was recognized in May 2001 by a cluster of car manufacturers, in-vehicle system developers and map data companies with the principal goal of evolving a standardized map data interface between stored map data and ADAS applications. Major goals of the ADASIS Forum are:

  • Define an open standardized data model and structure to symbolize map data in the neighborhood of the vehicle position (i.e. the ADAS Horizon), in which map data is sent by a navigation system or a general map data server.
  • Define an open standardized interface description to deliver ADAS horizon data (especially on a vehicle CAN bus) and enable ADAS applications to access the ADAS Horizon and position-related data of the vehicle.

Nevertheless, the ADASIS interface has not been executed in the series product environment of an OEM yet. On the other hand, more and more company specific solutions develop in the market and threaten the success of the ADASIS standardization method.

The multiple path prediction and the transport protocol necessitate a rather high effort to implement an ADAS Horizon Provider and an ADAS Horizon reconstructor in series production. With great focus on a minimized busload only relative data should be communicated which generates a low data load on the bus as well as little efforts on the reconstruction side.

Consequently the ADASIS Forum is presently developing a specification of a simplified ADAS horizon based on a single path concept: ADASIS v2. A single path concept prolonged by intersection stubs or selected alternative paths is seen as suitable for most applications that are presently prepared for series implementation.

Some of the general entities in the architecture of a map-based ADAS application

  • ADASIS Horizon Provider (AHP) which creates ADAS Horizon and messages that will be sent to ADAS applications.
  • ADASIS v2 Protocol that describes how ADAS Horizon will be sent to ADAS Applications.
  • CAN Bus is expected to be the transport layer for ADAS v2 Protocol.
  • ADAS Application reconstructs and uses ADAS Horizon.

The expansion of Advanced Driver Assistance Systems (ADAS) and general in-vehicle ITS applications which upkeeps the driver in safe, comfortable and economic driving are of key importance to the automotive industry.

An Usual ADAS applications include Adaptive Cruise Control (ACC) or Adaptive Light Control (ALC). ADAS presently perform their function on basis of information produced by sensors.

Each year, an increasing number of vehicles are furnished with navigation systems. Soon after their introduction, the potential of such systems in the use of the digital map and vehicle position was realized soon after.

The possibility to forecast the road geometry with its related attributes ahead of the vehicle should obviously benefit ADAS applications and propose new functionalities. Today, navigation map databases are unreachable from applications other than navigation and stored in the patented format of the navigation system.

In order for ADAS applications to access such information as map data, vehicle position and speed – which currently could be delivered by navigation, but may change in the future – it is essential to define and develop appropriate API between ADAS and the source of this data.

This is the overall aim of the ADASIS Forum. The ADASIS initiative was first propelled by Navteq in May 2001. After four meetings, it was decided to re-organize this group as an ERTICO-coordinated forum in order to officially define, structure and organize its work.

Membership of the ADASIS Forum is open to all public and private organizations that have a strong interest in ADASIS and support the intentions of the Forum, and is geared to the following sectors:

  • Vehicle manufacturers
  • Navigation systems manufacturers
  • ADAS manufacturers
  • Map database manufacturers

During the last 2 years, the ADASIS forum has strongly worked to update and improve the existing ADASIS standard.

Now, with the new release version ADASIS v2, the access to the ADAS horizon has been simplified significantly. The new protocol uses the possible driving paths as building blocks, to which additional map attribute information can be attached. This includes also new ADAS attributes like curvature or slope profiles.

The new concept is modular and extendible. It can be implemented in reduced configurations to support very limited hardware platforms. For more sophisticated applications, a full horizon with all map attributes and alternative path information is also possible.

Also, in parallel to the protocol specification, the ADASIS forum has also executed a reference reconstructor software module. The reference reconstructor is used to examine the specification in real-world implementations and to advance application prototypes.


One challenge that has challenged the automotive industry is how to change the vast oceans of sensor data produced by cars into useful services.

The data produced from sensors on board modern vehicles can be used to warn other cars on the road about traffic flows or possible dangers. The faster that can occur, the more efficient and safer our roads will become.

Yet the industry has faced an obstacle – there was not one single data specification that automotive companies could use. This has made distributing the data problematic.

Until 2015, when HERE kicked off discussions across the industry to help resolve this issues by evolving a universal data format that would outline consistent parameters for data collected by all vehicles on the road.

The ultimate goal is to allow cars talk to and understand each other. This would result in fewer accidents and more efficient journeys. Such a data standard would also be essential in moving the industry toward cars that can completely understand their environment and drive themselves.

With automakers taking their own routes to evolving autonomous driving, one needs to understand how these self-driving vehicles of the future from various brands can function together on a larger, more global scale.

HERE, formerly an American company that is now co-owned by Audi, BMW, and Daimler, has established a design for universal data format that will permit for a standardized vehicle data exchange creating the crowdsourcing paradigm available for self-driving automobiles. Sharing data such as real-time traffic, weather and parking spaces will be much faster and easier.

The design is called SENSORIS and it now has been chosen up by ERTICO – ITS Europe, a UK body overseeing the development of globally-adopted standards relating to future automotive and transportation technologies, which has introduced the SENSORIS Innovation Platform to be able to come up with a standardized interface description which can be developed for use across the world and between different automakers in the industry.

Presently, 11 major automotive and supplier companies have by now signed up for the SENSORIS Innovation Platform and they are AISIN AW, Robert Bosch, Continental, Daimler, Elektrobit, HARMAN, HERE, LG Electronics, NavInfo, PIONEER and TomTom.

Combining equivalent vehicle data from millions of vehicles around the world will permit for a fully automated driving experience.

Each vehicle will have access to ‘near real-time’ info of road conditions, traffic data and numerous threats that will help these self-driving vehicles make improved judgements on the road.

A standardized, globalized interface specification for vehicle-to-cloud data has been broadcasted by the Sensoris innovation platform, coordinated by the Ertico-ITS Europe partnership. This data specification is said to be a critical piece of digital infrastructure for associated and automated driving as it “closes the loop” between a vehicle’s sensors, map and connected services.

This builds on work introduced by HERE Technologies, which published in 2015 the first open specification for transporting sensor data gathered by cars to the cloud for processing and analysis. HERE submitted the universal data format to Ertico-ITS Europe in 2016, and the work was changed into the standardized interface specification under the Sensoris Innovation Platform, an association between 28 leading vehicle manufacturers, telecommunications, ADAS and navigation suppliers, as well as location, content and service providers.

The data description covers input on weather environment, road infrastructure, traffic regulation, traffic events and behavior as well as the in-vehicle status. Sensoris is now contributing in the Open AutoDrive Forum to complement data flow and allow interoperability between data formats, with strategies for testing in real-world scenarios.

Sensoris data closes the vital loop between the vehicle and cloud. Automated vehicles depend on on the efficient delivery of data services and Sensoris delivers the necessary feed of near real-time information on the road environment. The specification’s release is a significant achievement for the industry, and they now have the prospect to create broad adoption through real-world testing and the incorporation of Sensoris with present data standard formats.”

Ertico-ITS Europe represents over 120 public and private companies and organizations, including traffic and transport industry stakeholders, public authorities, user organizations, vehicle manufacturers, service providers, suppliers, and mobile network operators. At its recent annual Think Tank event, held last month in Brussels, a board of speakers discussed issues including the importance of supporting start-ups to reinvent mobility where the role of ‘Prosumers’ (providers + consumers) in the co-creation and development of multi-model and shared or peer-to-peer mobility services; and the challenges and regulations around data sharing.

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