23  / SERVICE EXCELLENCE Yards and Repair Facilities  – CP supports its rail operations in the Eastern Corridor with major rail yards at Sudbury, Toronto, London and Montréal. The Company has locomotive repair facilities at Montréal and Toronto and car repair facilities at Thunder Bay, Toronto and Montréal. The Company’s largest intermodal facility is located in the northern Toronto suburb of Vaughan and serves the Greater Toronto and southwestern Ontario areas. CP also operates intermodal terminals at Montréal and Detroit. CP also has transload facilities in Agincourt and Hamilton, Ontario to meet a variety of commodity needs in the area. The Company’s rail network is standard gauge, which is used by all major railways in Canada, the U.S. and Mexico. Continuous welded rail is used on the core main line rail network. CP uses different train control systems on portions of the Company’s owned track, depending on the volume of rail traffic. Remotely controlled centralized traffic control signals are used in various corridors to authorize the movement of trains. CP has implemented PTC on 2,117 miles of its U.S. network. In other corridors, train movements are directed by written instructions transmitted electronically and by radio from rail traffic controllers to train crews. In some specific areas of intermediate traffic density, CP uses an automatic block signalling system in conjunction with written instructions from rail traffic controllers. The Company continually assesses its network to ensure appropriate capacity to meet market demand. As part of CP's annual capital program, the Company has made substantial investments to support current and future volumes, including upgrading the network to handle longer and heavier trains, such as extending sidings to accommodate new train lengths. The Company’s operating metrics, such as average train speed, length and weight, demonstrate efficient utilization of network capacity, discussed in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Performance Indicators. CP operates on a network of approximately 12,700 miles of track, not including 244 miles of tracks owned and operated by CMQ U.S. 237 miles of first main track and 81 miles of sidings and yard tracks have been acquired through the CMQ Canada transaction and is included below. CP has access to 2,200 miles under trackage rights. The Company's owned track miles includes leases with wholly owned subsidiaries where the term of the lease exceeds 99 years. CP's track network represents the size of the Company's operations that connects markets, customers and other railways. Of the total mileage operated, approximately 5,400 miles are located in western Canada, 2,500 miles in eastern Canada, 4,400 miles in the U.S. Midwest and 400 miles in the U.S. Northeast. CP’s network accesses the U.S. markets directly through three wholly owned subsidiaries: Soo Line Railroad Company (“Soo Line”), a Class I railway operating in the U.S. Midwest; the Dakota, Minnesota and Eastern Railroad ("DM&E"), a wholly owned subsidiary of the Soo Line, which operates in the U.S. Midwest; and the D&H, which operates between eastern Canada and the U.S. Northeast. At December 31, 2019, the breakdown of CP operated track miles is as follows: CP operates numerous facilities including: terminals for intermodal, transload, automotive and other freight; classification rail yards for train-building and switching, storage-in-transit and other activities; offices to administer and manage operations; dispatch centres to direct traffic on the rail network; crew quarters to house train crews along the rail line; shops and other facilities for fuelling; maintenance and repairs of locomotives; and facilities for maintenance of freight cars and other equipment. The Company continues to invest in terminal upgrades and new facilities to accommodate incremental growth in volumes, such as creating additional capacity with the redesign of the classification yard at Alyth in Calgary. The Company’s average terminal dwell is an indicator of efficient utilization of yard capacity, discussed in Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations, Performance Indicators. Typically in all of our major yards, CP Police Services has offices to ensure the safety and security of the yards and operations. Rail Facilities Track and Infrastructure Network Investment Right-of-Way Total First main track 12,683 Second and other main track 1,088 Passing sidings and yard track 4,353 Industrial and way track 779 Total track miles 18,903