. Electric railway journal . in charge of tests for the Chicago Rail-ways Company. The following data have been abstractedfrom this official report. The introduction to the report includes the followingstatement: It is a well-known fact that the best resultsin operating cars are obtained by efficient acceleration,efficient braking and anticipating the stops or slow-downsfor traffic. The Railway Improvement Company of NewYork, manufacturer of the coasting time recorder, pre-sented claims to the Chicago Railways that its device wouldserve to obtain these results by increasing the coastingtime on
. Electric railway journal . in charge of tests for the Chicago Rail-ways Company. The following data have been abstractedfrom this official report. The introduction to the report includes the followingstatement: It is a well-known fact that the best resultsin operating cars are obtained by efficient acceleration,efficient braking and anticipating the stops or slow-downsfor traffic. The Railway Improvement Company of NewYork, manufacturer of the coasting time recorder, pre-sented claims to the Chicago Railways that its device wouldserve to obtain these results by increasing the coastingtime on all runs without decreasing the schedule time. Italso claimed that the increased coasting resulted in thefollowing: (1) A saving in power consumption; (2) thepercentage of power saving is directly proportional tothe increased percentage of coasting; (3) a lowering ofthe peak on the power station is accomplished, due to adecrease in the power consumption and also because themotormens time in accelerating becomes more uniform. Fig. 2—Chicago Coasting Tests—Coasting Clock, Mounted in Car corder under the conditions of operation on the ChicagoRailways lines. It was decided that the most reliablemethod of determining the saving in power consumptionwas to select a line on which it was most difficult to coastand to meter the substation output to this line. The VanBuren Street line, on account of the narrow street, ex-treme congestion of team traffic and relatively fastschedule, was chosen as the line on which to make the line consists of five trolley sections and extends December 9, 1911.] ELECTRIC RAILWAY JOURNAL. i 19$ from Kedzie Avenue on the west to State Street on theeast, a round-trip distance of 8 miles. It is one of theprincipal thoroughfares for heavy team traffic leadingwestward from the Loop district of Chicago. To makepossible an accurate checking of the energy consumptionon the line during the test period, four of the five trolleysections, extending from K
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