Whistling Barred, Also Cane Swinging.

New York Times 100 years ago today, December 23, 1912:
Persons in Berlin Streets, Moreover, Must Not Walk More Than Three Abreast.
CANNOT THROW BUTTS AWAY
And Dragging Skirts Will Be an Offense Under Law — Teamsters Will Have to be Careful.
By Marconi Transatlantic Wireless Telegraph to The New York Times.
    BERLIN, Dec. 22.— Police regulations intended to make the streets quieter by day and night, to come into force next April 13, include the following:
    Persons may not walk more than three abreast or stop or congregate for any extended period of time. Persons with umbrellas or walking sticks must not carry or swing them in any manner likely to imperil the safety of passers-by.
    No windows or doors of houses, flats, shops, or restaurants in which music is being played may be kept open.
    No whistling, singing, shrieking, shouting, or loud talking of any kind likely to endanger the quiet of the streets is to be permitted.
    Teamsters in charge of wagons, trams, or trucks loaded with resounding metal of any kind are forbidden to drive in a manner calculated to cause nerve-shattering noises.
    No paper, remains of fruit, cigars, or cigarettes may be thrown into the streets.
    The dragging of clothes of any kind — women's dresses or anything else capable of producing dust — is prohibited.
    Householders are required in Winter to keep the footpaths in front of their premises clear of snow and ice between 7 A.M. and 8 P.M. After 8 P.M., if the sidewalks are slippery, sand or ashes must be sprinkled.