GPS World, May 2016

WATCH MARKETWATCH MARKET 2 TRANSPORTATION Connected Vehicles Road Ready Yet BY Chaminda Basnayake RENESAS E LECTRONI CS AMERICA INC R ecent progress with Dedicated Short Range Communications DSRC Notice of Proposed Rule Making NPRM brings connected cars or V2X connectivity between vehicles infrastructure and all road users closer to reality than ever before If all goes well an NHTSA mandate on DSRC in new light vehicles is expected to start around 2020 as a phase in plan with completion around 2025 Regulations for aftermarket devices are expected to come soon after The mandate is expected to leave auto OEMs to choose the applications and human mancine interface HMI This will be the culmination of more than a decade of technology development and standardization by U S Department of Transportation USDOT automotive OEMs and other industry partners Significance of V2X According to USDOT V2X technology can positively impact more than 80 of non impaired vehicle crash types that result in over 30000 deaths in the U S alone A report by the Fedral Highway Administration to Congress states that V2X technology is ready to be deployed in the near future and is expected to yield significant safety and efficiency benefits From a consumers perspective V2X will be a part of a vehicle ADAS Active Safety Driver Assistance System Initial systems will provide information only and these systems are expected to evolve into warning and control capabilities In a future vehicle information from multiple sensors including V2X will be combined fused to generate a view of the surrounding environment FIGURE 1 gives an example of such sensors including long and short range radar lidar cameras and V2X V2X offers unique advantages over other sensors that depend on direct line of sight Information can be received from vehicles not visible to other sensors giving a much larger field of view V2X can transmit information directly from traffic control devices instead of inferring information from camera observations FIGURE 2 depicts the sensor fusion screen from an ADAS development platform by Renesas Electronics 36 GPS WORLD WWW GPSWORLD COM MAY 2016 America Such a platform offers the flexibility to implement an ADAS using all available sensors for example blindspot warning from radar forward collision warnings from combined radar camera and V2X surround object detection from combined radar lidar vision and V2X with information presented via an OEM specific HMI GNSS ROLE AND CHALLENGES V2X is built on the assumption that vehicles infrastructure elements and other road users are locationaware and can communicate critical information to others around them As seen in FIGURE 3 the system will position all communicating V2X entities with respect to the host vehicle and security interface which validates all relevant DSRC messages A control area network CAN or a similar interface will be needed for direct access to vehicle information such as brake and turnlight status and odometer Interfaces to long range connectivity such as cellular networks and other data sources such as maps may also be included The system will connect to an HMI to display information and future systems will likely evolve to vehicle control functions Figure 2 Renesas ADAS development platform Figure 1 Example of a vehicle sensor configuration