30. As a further precaution in foggy weather, no Engineman is allowed to leave a Station with a Train until the preceding Train has been started at least =ten minutes=; and before starting, the Clerk in charge of the Station, or the Policeman on duty, is to give the Engineman =the exact time= when the preceding Train started, and where it is next to stop. 31. Enginemen are at all times to use great caution in =foggy weather=, and especially in approaching Stations, from the difficulty of discerning the regular Signals until close upon them; and they are to be prepared to bring their Engines to a stand, should it be required. 32. No Engineman is to pass from a Branch on to the Main Line until the Policeman at the Junction Points signals the Main Line clear, and in foggy weather he is to bring his Engine to a stand before reaching the =Junction Points=, and not to enter upon the Main Line till he has ascertained from the Policeman how long the preceding Train or Engine has passed. 33. To avoid risk of collision on single Lines, from the meeting of another Engine, no extra Engine, with or without a Train, is allowed to pass along the Line without =previous notice=. 34. Every Engineman is to be careful, when he passes a Station, or when the way is under repair, to proceed slowly and cautiously; and he is also to do so whenever he sees the =Green Signal=. 35. Luggage, Coal, and Ballast Trains are always to give way to Passenger Trains by going into the nearest siding. 36. The Whistle is to be sounded on approaching each Station and level crossing, and on entering the Tunnels. =Three= short sharp whistles, rapidly repeated, must be given when danger is apprehended, and when it is necessary to call the attention of the Guards to put on the Breaks. When more than one Engine is attached to the Train, the Signal is to be given by the Leading Engineman; and in case of danger is to be repeated by the following Enginemen, who will forthwith reverse their Engines and attach their Tender Breaks. Frequent use must be made of the Whistle in foggy weather. 37. Enginemen with Luggage Trains are to approach all stopping places at a speed not exceeding =ten miles= an hour, when within a quarter of a mile of the stopping place, and to signal the Breaksman by =two= distinct Whistles to put on his Break before the Tender Break is put on. 38. Luggage Enginemen must refuse to take up waggons of goods, if they are of a nature to take fire by a spark or hot cinder, unless such goods are =completely sheeted=. Enginemen are to see that the cinder-plates at the back of their Tenders are in good order.