As a first step, Russian Railways (RZD) is to install a system using video and thermal imaging to monitor the entire 650km Moscow - St Petersburg main line. Mobile groups will be on hand around the clock to rush to any perceived danger. Mr Vladimir Yakunin, president of RZD, says the surveillance system will be independent of external sources and impossible to switch off. However, he also called on people living near the line to be vigilant. "Assistance is necessary in such situations," Yakunin says. "In the west, dozens of ladies would call police if a stranger appeared all of a sudden." Yakunin also says that steps will be taken to make passenger coaches safer, as many passengers were injured by flying debris on the Nevsky Express.