Research is needed:
To determine whether the use of incentive/disincentive payments based on the measured smoothness of PCC pavements has resulted in better construction practices and smoother pavements,
To determine if we have a smoothness problem,
To assess if initially smooth pavements have long lasting benefits which are economically justified and
To develop a method of measuring the smoothness of newly constructed and overlaid flexible pavements,
To develop a smoothness specification that can be used for flexible pavements.
The primary piece of equipment used by other states for rideability specifications is the California Profilograph. Other equipment that has been used for rideability specifications include Mays Ride Meters and Road Profilers.