. Electric railway journal . ee signals at FarmCreek clear after this train passes signal 1720. Theswitch indicators at Farm Creek Siding have been con-trolled only to the point marked 1 on the diagram, andto signals 1710, 1710-A and 1710-B, as it was consid-ered to be desirable to reduce the control section to theminimum safe distance. This decision was made be-cause of the cutting down of the time available forswitching work on account of the frequent service. In the illustration on page 408 is shown the doublesignal location at the south end of the bridge. Thesesignals are mounted on the br
. Electric railway journal . ee signals at FarmCreek clear after this train passes signal 1720. Theswitch indicators at Farm Creek Siding have been con-trolled only to the point marked 1 on the diagram, andto signals 1710, 1710-A and 1710-B, as it was consid-ered to be desirable to reduce the control section to theminimum safe distance. This decision was made be-cause of the cutting down of the time available forswitching work on account of the frequent service. In the illustration on page 408 is shown the doublesignal location at the south end of the bridge. Thesesignals are mounted on the bridge pier considerably be-low the track level. The wires leaving the trunking andattached to the bridge structure would normally be car-ried over the bridge in trunking laid next to the woodenguard rail, but on account of redecking work these hadto be temporarily removed. The right-hand illustrationshows signals 1710, 1713 and 1712, also the turnoutsused on the Peoria cars. This installation cost approximately $6,000. It re-. ILLINOIS TRACTION SIGNALS—VIEW OF SIGNALS ATRENCE SIDING ON THE DECATUR BELT LINE TOR- places an installation of trolley-contact signals whichdid not give complete satisfaction under the peculiarconditions involved. Light Signals with Self-Contained Blocks The two other special installations that were madelast year are of the light signals only, one being on thefreight belt-line around the city of Decatur and theother protecting a single-track bridge on a suburban linethat runs south from Danville to Ridge Farm. The general layout of the Decatur Belt installation isshown in the accompanying diagram. There are seven-teen signals of the Union Switch & Signal Companyslight type with 5%-in. lenses, and these protect fourblocks which vary in length from 1700 ft. to 7100 block has a single-track circuit, and auxiliary sig-nals in advance of those at the ends of the blocks areused. This scheme was adopted partly because it elim-inated the necessity for
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