Decision of arbitrators governing rates of pay and certain conditions of employment of passenger and freight conductors, assistant conductors, train baggagemen, passenger trainmen, freight brakemen and flagmen, yard conductors and yard brakemen, and also conductors and trainmen in mixed train, mile run, and pusher or helper service, in the employ of the New York central & Hudson River railroad company (including the West shore railroad) and the Boston & Albany railroad company