**3. Conclusion**

In this chapter, the means of enhance active and comprehensive safety policy on the automobile dynamics control system is described. The vehicle dynamics control has evolved due to the progress of electronics, miniaturization, and software development and is growing quickly in the future. Moreover, systems of ABS, TCS, ESC, TVC, and ARC are described.

Sensor fusion and connectivity might be more important. Sensor fusion is a technique that combines in multiple physical sensors and generates that combine accurate data even if each sensor alone cannot be trusted. Not only the number and type of sensors but also how to use sensors is important. Software synthesizing results from multiple sources provides more sophisticated analysis with more rapid insight than when data from each sensor must be processed separately. By combining input from various sensors to complement the limits and errors of each sensor, the function can be assured. Automotive suppliers continue to find new ways to replace existing mechanical systems, and it is estimated that in the future, development such fusing and connecting sensors will continue for automatic operations. Electronic vehicle control has been attracting more attention with the attraction of the self-driving vehicles and advanced driver assistance systems.

Today 's vehicle network is transforming automobile parts, which are in the areas of mechanical or hydraulic systems or into electronic systems. Replacing mechanical parts with electronic parts will cause an integration of the level of the overall system. As a result, the cost of advanced systems should drop sharply. Sophisticated features such as chassis control and smart sensors are becoming mainstream. The X-by-wire system does not rely on conventional mechanical or hydraulic mechanisms. They make lightweight, cheap, safe, and more fuelefficient vehicles. Such a system can eliminate a hydraulic brake and pump. The X-by-wire steering system might replace the steering column shaft with an angle sensor and a feedback motor. It will also simplify the production of models for the left hand and the right hand. It is natural to add advanced functions to such electronic systems. In a mechanical steering system, the driver actually feels that the vehicle loses control in an unstable state and can respond appropriately. To accommodate this, the X-by-wire system may include a motor on the steering wheel that provides an artificial feedback to the driver.

Technologies for collecting information with sensors mounted on vehicles have evolved with automatic driving vehicles and advanced driving support systems (ADAS). A system that collects information by various sensors such as cameras that recognize objects and people around vehicles and radars (LIDAR) that detect distant obstacles and oncoming vehicles is being put to practical use. After the surrounding environment can be accurately grasped, a technique is required that accurately utilizes the obtained information for autonomous control of accelerator, brake, and steering wheel. The technology of ABS, TRC, and ESC is applied to the operation of this accelerator, brake, steering wheel.
