An Evaluation of the Automatic Emergency Braking and Forward Collision Warning System in a 2014 Subaru Forester

Testing was conducted to evaluate the performance of the 2014 Subaru Forester’s North American Generation 1 EyeSight system at speeds between 6 and 57 miles per hour (mph). The testing utilized a custom-built foam stationary vehicle target designed to withstand 60+ mph impact speeds. Testing measured the Time to Collision (TTC) values of the visual/audible component of the forward collision warning that was presented to the driver. In addition, the testing quantified the TTC and Time to Collision 2 (TTC2) response of the Automatic Emergency Braking (AEB) system including the timing and magnitude of the stage one braking response and the timing and magnitude of the stage two braking response. The results of the testing add higher speed Forward Collision Warning (FCW) and AEB testing scenarios to the database of publicly available tests from sources like the Insurance Institute for Highway Safety (IIHS), which currently evaluates vehicles’ AEB systems at speeds of 12 and 25 mph.