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Driver drowsiness detection is a car safety technology which helps prevent accidents caused by the driver getting drowsy. Various studies have suggested that around 20% of all road accidents are fatigue-related, up to 50% on certain roads. [1] [2]
Indirect TPMS (iTPMS) systems do not use physical pressure sensors; they measure air pressures using software-based systems, which by evaluating and combining existing sensor signals such as wheel speeds, accelerometers, and driveline data to estimate and monitor the tire pressure without physical pressure sensors in the wheels.
OBD-II PIDs (On-board diagnostics Parameter IDs) are codes used to request data from a vehicle, used as a diagnostic tool.. SAE standard J1979 defines many OBD-II PIDs. All on-road vehicles and trucks sold in North America are required to support a subset of these codes, primarily for state mandated emissions inspections.
The MIL will also illuminate if the engine has been cranked but failed to start after returning the ignition to "on". In most modern vehicles this is usually due to not giving the engine enough cranking time to start. In pre-fuel injection years many cranking attempts were sometimes required to start the car.
The typical modern TCU uses signals from engine sensors, automatic transmission sensors and from other electronic controllers to determine when and how to shift. [2] More modern designs share inputs or obtain information from an input to the ECU, whereas older designs often have their own dedicated inputs and sensors on the engine components.
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 ...
Specifically, the driver monitoring system includes a CCD camera placed on the steering column which tracks the face, [2] via infrared LED detectors. [3] If the driver is not paying attention to the road ahead and a dangerous situation is detected, the system will warn the driver by flashing lights, warning sounds.
A shift light is a warning lamp fitted to vehicles in order to indicate to the driver that maximum revolutions per minute (r/min) has almost been reached. Ideally a shift lamp will illuminate at the engine speed beyond that which delivers the maximum power , measured in for example kilowatt (kW) or brake horsepower (BHP), such that the power ...