46. They must permit their hand cars to be used only in the service of the company, and no one will be allowed to ride on these cars except employees in the performance of duty, unless provided with a written order from the proper authority. When two or more hand cars are following each other they will keep at least 300 feet apart. Hand or velocipede cars belonging to private parties will not be allowed on the track except by order of the Superintendent. 47. When obliged to run hand and velocipede cars after dark, two red lanterns must be so displayed on the car as to be visible to trains in both directions. 48. Hand, dump cars, and velocipedes must not be attached to moving trains, nor shall they be used upon the main track in foggy weather, unless properly protected, and they must not be taken from the track at public or private crossings, except to avoid an approaching train. 49. No wood, ties, or property of any description must be piled within six feet of the main or side track, or elsewhere, in such manner as to obstruct the view of, or from, approaching trains. Old ties, fencing, and similar property, also links, pins, draw-bars, spikes, and all other material and iron work that is found on the section must be picked up at once, piled neatly, or disposed of as directed by the roadmaster. Rails and other material must _not_ be left scattered about station grounds. 50. While at station conductors will do such switching as may be required by the station agent. Trainmen and switchmen must not couple to or move cars that are being loaded or unloaded on side tracks without first ascertaining whether anyone is in or about such cars and giving them ample notice that same are to be moved. They must not obstruct street or public crossings with their trains and be particular when at junction points not to allow any part of their train to stand on railway crossings or interlocking plants. 51. All employees are prohibited from going between cars or between car and engine for any purpose or in front of any moving car to fix couplers while same are in motion. 52. Enginemen must keep the headlights of their engines in good order, and when running after dark, or when storms, fogs or other causes render it necessary, they must be lighted. When trains are waiting on side tracks, clear of main track, or on the end of double track, headlights of engines must be covered. 53. When trains meet by special order or time-table regulations, conductors and enginemen must inform each other by word of mouth what trains they are.