The city police have started prosecuting vehicles with defective number plates and the ones that have registration numbers written in fonts that are difficult to read when the vehicles are in motion. Police said such vehicles, when found violating traffic rules, often result in faulty citation cases, causing inconvenience to motorists who get falsely implicated. Advertisement The police have prosecuted 2,252 motorists over the past 26 days for using defective number plates. “The number plates that do not conform to the standard size and font are deemed defective. Among those are the ones on which the digits and the letters are written in a font that is difficult to read when the vehicle moves,” said a traffic officer posted in south Calcutta.