Travelling by suburban trains may be safer for women soon as rail ways is planning to introduce CCTV surveillance in women's coaches as part of plans to improve security . Commuters have hailed the move, which comes at a time when there have been a few cases of women being attacked inside suburban trains at night in Chennai. Southern Railway will get `4.27crore, which more than what it received last year, to set up an integrated security sys tem at stations as part of move to improve security. Railway Protection Force and Government Railway Police are suffering from a shortage of personnel. Constables are posted to travel on women's coaches at night. But it h es at night. But it has not helped prevent crimes against women.Sources said that high resolution CCTV cameras will be needed for surveillance in suburban trains because of the large number of commuters.“The plan is to install cameras and connect them to guard's cabin using cables. This needs alteration in EMU coaches which requires permission from RDSO. The agency needs to conduct trials and approve a design before it can be retrofitted on EMUs. Very few new rakes of suburban trains are handed over to Chennai every year,“ said a railway official.A major stumbling block will be an undue delay often experienced for a new feature to move from the drawing board to the consumer. RDSO (Research, Designs and Standards Organisation) started studying feasibility of installing CCTVs inside express trains in 2010, but the technology is yet to be implemented on trains.“Seven years was the delay suffered by railways to introduce passenger-friendly, aesthetic interiors for a long distance EMU. The innovations were minor like concealed nuts and bolts and different upholstery. But the number of permissions and trials needed causes undue delay ,“ said an official of Integral Coach Factory .Frequent commuters say speedy implementation is im portant. “Railways announced air-conditioned coaches for the suburban network. But, they are yet to come. They should speed up installing CCTVs at all stations,“ said S Mohanram, a commuter and former member of divisional rail users consultative committee.A woman was pushed out of a suburban train by a robber near Park station in the last week of December. In January , a guard was attacked and robbed at night on a suburban train between Kodambakkam and Nungambakkam.