. Electric railway journal . uld then proceed to the siding and getinto clear without blocking the southbound train and neithertrain would be greatly delayed. In the case of a southbound train approaching the meetingpoint at B before signal No. 7 goes to caution it can pro- ^2. 2 \ , Fig. 1—Illinois Traction Signals—Diagram of Curve Pro-tection ceed at once to the siding and get into clear, for the reasonthat signal No. 4 is controlled only to signal No. 5, and not be-yond it to signal No. 7. For ordinary meets when both trains are on time and ar-rive at the meeting point together, the first t
. Electric railway journal . uld then proceed to the siding and getinto clear without blocking the southbound train and neithertrain would be greatly delayed. In the case of a southbound train approaching the meetingpoint at B before signal No. 7 goes to caution it can pro- ^2. 2 \ , Fig. 1—Illinois Traction Signals—Diagram of Curve Pro-tection ceed at once to the siding and get into clear, for the reasonthat signal No. 4 is controlled only to signal No. 5, and not be-yond it to signal No. 7. For ordinary meets when both trains are on time and ar-rive at the meeting point together, the first train, when pos- 5IOING A SIDING B SIDING C e v 4- 1 . 3 1 s >—^ - 5 V 7, 4^ e \ a - IO 12 Fig. 2—Illinois Traction Signals—Diagram of Signals atSidings sible, takes the siding, the other train stopping at the homesignal at the far end of the siding until this signal clears. TYPE OF APPARATUS The Union Switch & Signal Companys style B signals, al-ternating-current relays, track reactance bonds and specialties. Illinois Traction Signals—Home and Distant Signals Mid-way Between Two Sidings 4500 ft. Apart have been used. The signals have bottom post mechanismsand give a 60-deg. clear indication in the upper left-hand quad-rant. They are mounted on steel masts set vertically withcenters 7 ft. 9 in. from the center line of the track. The signalspectacle shafts are 15 ft. 4 in. above the top of the track accompanying engraving shows the location of a signal June 24, 1911.] ELECTRIC RAILWAY JOURNAL 1107 mast in relation to equipment clearance lines and to a trolleybracket and a transmission pole. All signal poles, blades and mechanisms are uniform in de-sign, except that the blades of the home signals are pointedand those of the distant signals are notched. Standard Ameri-can Railway Association colors were followed in painting theblades, using red for home signals on the governing side and
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