Abstract
Actual surface conditions of airport asphalt pavements have been surveyed and the changes of them with time have also been investigated with the accumulated survey data. The following primary findings are obtained. 1) The current surface conditions of runways are evaluated better than those of taxiways, that leads to higher PRI for the runways. 2) The current surface conditions are rated good as a whole, but those of runways are evaluated worse compared with those of taxiways. 3) Annual changes of surface conditions depend on airports, and the influencing factors are different in types of surface conditions and pavement facilities. 4) Annual changes of surface conditions for runways could be roughly estimated with multiple linear regression analysis.
