1. A method for increasing route accuracies, the method comprising: recording waypoints while moving along a route; recording positional-accuracy measurements for each recorded waypoint; recording environment information for each recorded waypoint; calculating a position accuracy prediction (PAP) parameter for each recorded waypoint based on the recorded positional-accuracy measurements and the recorded environment information, wherein each PAP parameter comprises a weight value, a confidence value, and an error distance; and transferring the plurality of waypoints and the calculated PAP parameters to a computer-based system for comparison with a plurality of corpus waypoints and associated corpus PAP parameters.