The AP655D can be used in a wide range of applications from routine commercial jobs to demanding highway operations. Typical applications for the AP655D include: highways, urban and rural streets, county roads, lane additions, industrial sites, overlays, airport runways and other medium to high production paving jobs. The machine is powered by a Cat C6.6 engine with ACERT Technology that is U.S. EPA Tier 3 emission compliant. It also features dual operating stations with the Advisor Monitoring System (AMS), tilting consoles, exclusive Mobil-trac undercarriage or steel track undercarriage, high capacity cooling system, belt or hydraulic driven generator system and Caterpillar’s unique material handling system with independent auger and conveyor controls. Optional features include friction steering, smooth Mobil-trac belt, power folding front hopper apron and a track plow. The Cat C6.6 engine is a 6-cylinder that provides 174 hp. The machine can also be purchased with a steel track undercarriage.