. Report on the engineering and operating features of the Chicago transportation problem . RAILS AND I RACKS 175 luiuh tciukiUV to caul the rail out. ll also gives greater thick-ness of iieek and conseciuently iiiucli more wear wlien used oncurves. Ilie i)rincii)al objection wliicli may be raised against tiie Phil-adeli)liia rail is in respect to the ])rojection of the head or treadtil the lail above the outer cnlge of the groove tiange, whichamounts to o-Ki of an inch. .\lthougli these flanges are so de-signed that it will not be dilticult for any kind of vehicles to leavethe tracks, the proj
. Report on the engineering and operating features of the Chicago transportation problem . RAILS AND I RACKS 175 luiuh tciukiUV to caul the rail out. ll also gives greater thick-ness of iieek and conseciuently iiiucli more wear wlien used oncurves. Ilie i)rincii)al objection wliicli may be raised against tiie Phil-adeli)liia rail is in respect to the ])rojection of the head or treadtil the lail above the outer cnlge of the groove tiange, whichamounts to o-Ki of an inch. .\lthougli these flanges are so de-signed that it will not be dilticult for any kind of vehicles to leavethe tracks, the projection of the liead al)ove the tiange is suffi-cient to invite teams to follow the tracks. In Philadelphia the Street liailway (*omi)any is chaiged withthe entire cost of the maintenance of the [taving on the entirestreet Fioni curb to curb on all streets on which it lias tiacks. andas the tracks are principally single tracks this means some 5(K)miles of street. It is reasonable to supjiose that wheie the rail-way compan> is icsponsible for tlie condition ol llie paxcnicntoutsi(U ot
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