WITH THIS CONTRACT, FRA SEEKS TO UPDATE AND IMPROVE GTMS TO EXPLICITLY MODEL COMMUNICATIONS-BASED PTC SYSTEMS AND MEASURE THEIR EFFECTS ON CLASS 1 RAILROAD NETWORK CAPACITY. THE POTENTIAL CONTRACTOR MUST DEMONSTRATE A MASTERY FOR DEVELOPING OBJECT-ORIENTED SOFTWARE DEVELOPMENT, CUSTOM APPLICATIONS, AND SIMULATION TOOLS THAT HAVE BEEN VERIFIED AND VALIDATED BY THE RAILROAD INDUSTRY. THE SUCCESSFUL CANDIDATE WILL DEMONSTRATE A PROVEN ABILITY MODEL TRAIN MOVEMENT AND DISPATCHING WITHIN HIGHLY COMPLEX RAILROAD OPERATING ENVIRONMENTS, SIMULATE MULTIPLE BRAKING ALGORITHMS INCLUDING ADAPTIVE BRAKING; GENERATE AND MANAGE RECORDS OF TIME, POSITION, AND SPEED OF EACH TRAIN, AND QUANTIFY NETWORK AND DISPATCHER INDUCED TRAIN DELAY FOR ALL TRAINS AND BY TRAIN TYPE.