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27. In-car services refer to features such as in-car entertainment (music, movies, games). These features do not use vehicular communication and therefore are not further detailed. Ad-hoc services refer to temporary features, established for a specific duration, such as automatic toll payment. Provider services refer to Internet access and other provider services such as service requirement notification. The vehicle drivers and passengers are thus able to browse the web while on the move, shop online, and even participate in videoconferences.
On two wheels, hydraulic brake vs. 3. At full load an increase in stopping distance generally occurs, especially for trucks [20]. e. 3. : if the vehicle’s last brake was used at “x”% intensity to reduce the velocity by “y” then the stopping distance (time) may be computed accordingly. 4 Time and Distance for Overtaking The distance traveled during the overtaking maneuver is (Fig. 4 Time and Distance for Overtaking 57 Fig. 8 Vehicle distance to overtake v −v a = f t o – medium acceleration (may be determined by accelerometers), vo – initial velocity before overtaking maneuver, vf – final velocity after overtaking maneuver, t – time to complete the acceleration.
4). The instances of the communication regime are: The Sender needs to: • obtain the information (may be local vehicle telemetric data such as position or velocity or other stored information for a certain time) • package the information data into a message; • use a geocast mechanism to send the message to surrounding vehicles if any. The Receiver needs to: • obtain messages from sender; Fig. 4 Example of position-based communications 44 3 Communication Regimes • decode the messages into local vehicle data; • check plausibility of the messages from other vehicle by comparing with local sensor data.