Many stupid laws have to do with advancing technology. To mention just one: a provision in a code concerning the military, dating back to 1939, regulates “beasts of burden (horses, oxen, dogs, etc.)” that can be requisitioned “for vehicles employed by the army”.
Section 6.04.080 Dogs and cats restricted on cemeteries. No dog or cat shall be permitted in any public cemetery. Every dog specially trained to lead blind persons shall be exempt from this section.
Each horse-drawn vehicle engaged in carrying loads on the streets and highways of the District shall be equipped with an effective brake.