S Hulbert

RESEARCH LOCOMOTIVE AND TRAIN HANDLING EVALUATOR DEFINITION--CONCEPT 1. VOLUME I--EVALUATOR PERFORMANCE SPECIFICATION

S Hulbert, J Wheeler, R Dompe, 1977 .

MOTORISTS' REQUIREMENTS FOR ACTIVE GRADE CROSSING WARNING DEVICES

S Hulbert, R J Ruden, C F Wasser, 1977 .

RESEARCH LOCOMOTIVE AND TRAIN HANDLING EVALUATOR DEFINITION - CONCEPT 1. VOLUME III. ESTIMATED COSTS

S Hulbert, R Dompe, C Witham, 1977 .