Ludhiana, May 7 -- Commissioner of police Dr Sukhchain Singh Gill has banned the carrying of uncovered sand in vehicles. He said sand should be properly covered as it can cause accidents. The commissioner has also banned the sale of helmets without ISI mark, saying helmets with no ISI mark are not safe in accidents.Besides, the commissioner has also banned the use of commercial vehicles for ferrying passengers. He said that sometimes such vehicles are used to ferry people, which is an illegal practice and is in violation of the Motor Vehicles Act. Dr Gill these orders would be in force for the next two months....