According to members of Congress and security experts, new anti-terrorism rules aimed at reducing the number of railway cars packed with toxic chemicals (such as chlorine) going through cities may still leave large populations vulnerable. Here is a very relevant USA Today article on this issue: http://www.usatoday.com/news/nation/2008-03-13-toxictrains_N.htm
Electrolytic Technologies' systems for on-site generation of chlorine and sodium hypochlorite are safer, cost effective alternatives to traditional transportation of chemicals.