accident data recorder in early 1993. Motorsport In motorsport, accident data recorders (ADR) must be used in various series as specified by the FIA. Starting with the 2015 season, the use of an ADR in the Formula 4 championship was compulsory. In the higher series, the use has been mandatory for some time. In addition to the data of the acceleration sensors mounted on the vehicle, the loads on the driver are also measured with an in-ear accelerometer. Due to the higher speeds in formula sports compared to road traffic, the sensors have a measuring range of ± 150 g with a resolution of 0.1 g. 2 s are recorded before an event. With an event duration of 30 s, 10 events can be stored. Demarcation Both in a flight recorder and in a UDS, the constantly recorded data runs in a ring buffer. However, the flight recorder usually records for longer periods of 17 to 25 hours. In contrast, the UDS only saves a few seconds before and after an event is triggered (e.g. collision) permanently. The term drive data recorder is generally understood to mean a continuous and permanently available recording of data and signals during the operation of a vehicle, independently of an accident. Such systems are often used in locomotives or trams. Often, however, an electronic logbook is referred to as drive data recorder. Dashcams are sometimes referred to as drive data recorder or video event data recorder (VEDR). A so-called Event Data Recorder (EDR) is not an accident data recorder in the sense of an autonomous, more or less vehicle-independent device, since an EDR is usually an additional electronic module in an existing control device (e.g. from the Airbag) in a car. EDRs rely exclusively on on-board signals, while UDS have their own inertial sensors. Vehicles with airbag systems store accident-relevant data (impact accelerations, belt buckle conditions, seat positions, trip times) in the internal memory of the tripping electronics. However, the data size varies depending on the manufacturer and only extends over a few seconds or fractions. NHTSA regulations call for uniform data sets for all systems manufactured from 2010 onwards. See also Tachograph – truck Telemetry – continuous monitoring of the operating status Train event recorder – railway Voyage data recorder – ship References External links Vehicle Event Recording based ON Intelligent Crash Assessment, EU project between 2004 and 2009 on accident data storage