The Mobil-Trac Undercarriage combines the speed of a wheel paver with the traction and flotation of a track paver. This system is equipped with oscillating bogie sets that help the Mobil-trac maintain contact with the surface regardless of irregularities. Grade deviations and and tow point movement are minimized due to the smooth motion of these bogie sets, resulting in smoother paving results. This system is also maintenance-free. Rubber coated components shed asphalt shed asphalt and prevent accumlation, while self-tensioning accumulators, center guide blocks, and internal belt cables ensure reliability.