Open-Graded Friction Course (OGFC)
With the safety of Tennessee motorists as a priority, the new generation Open-Graded Friction Course (OGFC) is gaining popularity with TDOT pavement engineers. The back spray you get from vehicles in fast moving traffic is drastically reduced by using this strong, stable, porous mix that allows water to travel through the pavement to the edge of road and down the side instead of collecting on top of it. OGFC mixtures have long been noted for reduction in back spray, prevention of hydroplaning, improved wet weather visibility of traffic stripes, and reduced headlight glare. These mixes are also gaining wide appeal due to noise reduction characteristics. TDOT engineers are now including OGFC in pavement plans on four-lane, high-speed routes such as interstates, particularly in Middle Tennessee. TDOT views these mixtures as effective tools which provide motorists with a safe, durable, and quiet riding surface.
Where You Can Find OGFC:
Highways with and without OGFC