Railways have planned to install a comprehensive fire and smoke detection system in about 500 coaches on a trial basis during this financial year following the successful test of the technology. The system would be among a host of technologies that it has lined up to minimise loss of life and properties in case of any mishap. <br/><br/>AIR correspondent quoting sources in Railways reports, ministry planned to have the system installed in 20 rakes during this financial year, which comes to about 500 coaches to test its efficacy. <br/>