Interstate Commerce Commission. Rules Standards and Instructions for Installation, Inspection, Maintenance and Repair of Automatic Block Signal Systems, Interlocking Traffic Control Systems, Automatic Train Stop, Train Control and Cab Signal Systems and Other Similar Appliances, Methods and Systems. The legal basis for train control systems in the USA. March 31, 1966. 4 1/2" x 6 3/4". 84pp. Shipping with cardboard reinforced envelope via USPS Ground Advantage Mail. I will consolidate orders, if requested, to save on shipping costs.
