Patent ID: 8260480

Claim:
A method for updating an operational guideway database that is accessible by a computer, the method comprising: generating, by the computer, a first estimate of vehicle position based on the operational guideway database for a guideway, wherein the first estimate is generated on-board a vehicle that operates on the guideway according to a block authorization that gives the vehicle authority to operate; generating, by the computer, a second estimate of vehicle position, wherein the second estimate is independent of the operational guideway database, and wherein the second estimate is also generated on-board the vehicle that operates on the guideway; comparing, by the computer, (i) a block occupancy corresponding to at least one of the first estimate of vehicle position and the second estimate of vehicle position with (ii) the block authorization for the vehicle; and when the block occupancy and the block authorization match, updating, by the computer, the operational guideway database based on the second estimate of vehicle position.