This season, the NTT INDYCAR SERIES will adopt two new safety devices that will provide detailed data about the cars and drivers’ forces during a crash. Provided by EM Motorsport, Accident Data Recorders (ADR) and Ear Plug Accelerometers (EPA) will utilise the most cutting-edge technology to deliver highly accurate data quickly.
Felix Rosenqvest. Photo: IndyCar
EM Motorsport’s ADR uses internal accelerometers and gyros, and a Controller Area Network (CAN) interface to capture “at the scene” accident data to aid post-event analysis and safety research.
Additionally, EM Motorsport’s ADR is smaller and lighter than the unit it replaces in the series. The EPA is a small device with a 3-axis accelerometer that fits inside each driver’s earplugs to help obtain crucial information about a driver when involved in an accident. EM Motorsport ADR4 Device. Photo: EM Motorsport
This tiny device is a powerful tool in assessing the well-being of a driver

whilst they’re inside the cockpit. It includes driver’s radio communications and the accelerometer that detects the speed and amount of movement a driver’s head has in an accident.
INDYCAR has moved to use EM Motorsport’s ADR4 and EPA devices after successful tests undertaken during the 2020 racing season. EM Motorsport has been developing safety devices for the past decade. Many championships worldwide use EM Motorsport safety devices, including Formula One, Formula T...