Section 81. Defacing road signs and signals

Whoever maliciously or willfully damages, defaces, alters, modifies or removes any road sign, signal, indicator, or apparatus on the highway shall be punishable with imprisonment for a term which may extend to two years, or with fine which may extend to fifty thousand rupees, or with both; and if it is proved that any means exist for causing such damage, defacing, alteration, modification or removal, it shall be presumed, until the contrary is proved, that such damage, defacing, alteration, modification or removal, as the case may be, has been maliciously or willfully caused by such person.