subway train with traffic signal
 subway train with traffic
 | Keywords: | | Holiday, Holiday Travel, Holidays, Public Transportation, Rail, Rail Transportation, Rail Travel, Railroad, Railroads, Railway, Railways, Sign, Signal, Signals, Signs, Subway, subway train with traffic signal, Subways, Train, Trains, Transport, Transportation, Travel, Trip, Trips, Vacation, Vacations |
150 pixel Jpeg Image | greyscale conversion | 
|  sample greyscale conversion |
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