Zeolites are not effective. Recycling brake lining waste as a substitute for a portion of pavement aggregates appears to be effective. Accelerated testing appears to be very cost-effective. Hot mix asphalt seems to be the most cost-effective method of rehabilitating pavements. 530 Edgemont Rd.
Urethane blades on plows with wheels are most effective.
Carbide-tipped blades without wheels are the least expensive alternative. Blades with wheels are not as effective in removing packed snow. The flexible fence is effective. Unreliability of data prevents a clear conclusion on which methodology is best. Delay in getting started and some confusion in procedures kept Virginia from realizing the full benefits of CSIPs.