A passenger protecting system is provided with at least two sensors which detect an impact to a vehicle, a determining unit for determining a collision with the vehicle based on detection signals of the sensors, and a communication unit through which the sensors are connected with the determining unit so that the detection signals of the sensors are transmitted to the determining unit. The nanocomposite is composed of an exfoliated layered filler dispersed in a matrix material, which provides high mechanical strength to hold a high pressure gas such as hydrogen and high resistance to gas permeation. The inertial measurement unit includes three orthogonally placed accelerometers and three orthogonally placed rate gyros. The first portion and the second portion are substantially parallel to each other and, and the intermediate portion of the body is configured to accommodate an increase in thickness of a web section at a point where two railroad rails are joined. Another option is to provide a remote control from, for example, the handlebars of a motorcycle.