. The Street railway journal . lished sched-ules. Tracks in switches, car houses, etc., are omitted in this kilometer of street containing a single or double track is reckoned of street railway companies are not sufficiently detailed to permitof the various data being arranged in their proper classes. Forinstance, the traffic density of the Grosse Berliner Strassenbahn inthe period 1872-1889, for which there were no statistics availableas to the length of railway operated, was taken as approximatelyone-half the total length of track. In Fig. 1 curves are given showing the relation of


. The Street railway journal . lished sched-ules. Tracks in switches, car houses, etc., are omitted in this kilometer of street containing a single or double track is reckoned of street railway companies are not sufficiently detailed to permitof the various data being arranged in their proper classes. Forinstance, the traffic density of the Grosse Berliner Strassenbahn inthe period 1872-1889, for which there were no statistics availableas to the length of railway operated, was taken as approximatelyone-half the total length of track. In Fig. 1 curves are given showing the relation of traffic densityto car kilometers run for various railways. From a study of thesecurves the following principle may be established: Traffic density at first increases rapidly zvith the number of carkilometers run, then less rapidly, and finally reaches a limitingvalue beyond which there is no increase. This principle applies, however, only when there is a uniform,progressive increase of car kilometers. If the development is not.


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884