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Vehicular communication systems are computer networks in which vehicles and roadside units are the communicating nodes, providing each other with information, such as safety warnings and traffic information. They can be effective in avoiding accidents and traffic congestion. Both types of nodes are dedicated short-range communications (DSRC
A group of tell-tales showing lights for "brake fluid", "stop lamp" and "check engine" Graphical tell-talesA tell-tale, sometimes called an idiot light [1] or warning light, is an indicator of malfunction or operation of a system, indicated by a binary (on/off) illuminated light, symbol or text legend.
Beyond safety signs, EEC Directive 92/58/EEC standardize markings for fire equipment, acoustic signals, verbal and hand signals for vehicle movements. [10] In 2013, the European Union adopted ISO 7010 to replace the symbols provided previously, adopting them as European Norm (EN) ISO 7010, standardizing symbols among the EU countries.
The terms "active" and "passive" are simple but important terms in the world of automotive safety. "Active safety" is used to refer to technology assisting in the prevention of a crash and "passive safety" to components of the vehicle (primarily airbags, seatbelts and the physical structure of the vehicle) that help to protect occupants during a crash.
Reliability is a high priority in range safety systems, with extensive emphasis on redundancy and pre-launch testing. Range safety transmitters operate continuously at very high power levels to ensure a substantial link margin. The signal levels seen by the range safety receivers are checked before launch and monitored throughout flight to ...
The US National Highway Traffic Safety Administration (NHTSA) saw this model deployment as proof that road safety could be improved and that WAVE standard technology was interoperable. In August 2014 NHTSA published a report arguing vehicle-to-vehicle technology was technically proven as ready for deployment. [ 36 ]
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The system is active up to 31 miles per hour (50 km/h) and steers, brakes, and accelerates the car on its own. [77] It relies on the adaptive cruise control sensing a car in front and clear lane markings to be present. 2016 Audi: Audi A4: Semi-autonomous traffic assistant marketed as "Traffic Jam Assist" offered as an option. Tesla: Model S ...