HMVs with total gross weight of 16 tonnes and above have been prohibited till September 2 between 8pm and midnight. Thereafter, it will be implemented on 5th and 10th days of Ganpati immersions. But emergency vehicles like ambulances have been exempted. Traffic police have prohibited heavy motor vehicles (HMVs) on Mumbai-Goa highway (NH66) to prevent traffic snarls during Ganeshotsav.