When sealing roadways where traffic speeds are high, it is best to allow additional time for asphalt to bond to the aggregate securely prior to opening to traffic. This not only prevents damage to the freshly placed seal coat but also reduces the potential for vehicle damage.

Allowing slow-moving traffic on a new seal coat after final rolling is one of the best means to reduce premature aggregate loss. Slowly moving vehicles seem to provide a level of aggregate orientation not achievable by conventional pneumatic rollers. One method to assure the traffic will move slowly is to use pilot vehicles.