No person prosecuted for an offence punishable under section 183 or section 184 shall be convicted unless
(a) he was warned at the time the offence was committed that the question of prosecuting him would be taken into consideration, or
(b) within fourteen days from the commission of the offence, a notice specifying the nature of the offence and the time and place where it is alleged to have been committed was served on or sent by registered post to him or the person registered as the owner of the vehicle at the time of the commission of the offence, or
(c) within twenty-eight days of the commission of the offence, a summons for the offence was served on him: Provided that nothing, in this section shall apply where the Court is satisfied that
(a) the failure to serve the notice or summons referred to in this sub-section was due to the fact that neither the name and address of the accused nor the name and address of the registered owner of the vehicle could with reasonable diligence have been ascertained in time, or
(b) such failure was brought about by the conduct of the accused.
Legal Commentary & Landmark Judgments: Section 209
Section 209 of the Motor Vehicles Act, 1988 provides vital procedural protection against belated and oppressive motoring prosecutions, prohibiting convictions for speeding (Section 183) or dangerous driving (Section 184) unless the driver was warned at the time of the offence or served with formal notice or summons within strict statutory timeframes.
When defending an accused against a belated speeding or dangerous driving challan (e.g., automated camera challans received months after the alleged date), invoke Section 209. If the prosecution cannot prove on-the-spot warning or service of notice within 14 days (or summons within 28 days), move for immediate acquittal on grounds of statutory bar.