Automotive Robotics Proving Labs (ARPL) is an engine test and development facility located in East Peoria, Illinois. ARPL boasts a secure, 48,000 square foot facility which is conveniently located near Interstate 74. The facility is capable of operating engines up to 4500 HP and can perform a multitude of different tests, including emissions development. ARPL also offers an experienced mechanics division, performance development engineers, and a full in-house fabrication shop. Our passion is to reduce engine emissions and help make the environment a safer and cleaner place to live for future generations.