1. Vision Zero - an ethical approach to safety and mobility;Tingvall,1999
2. The zero vision: a road transport system free from serious health losses;Tingvall;Transport. Traffic Saf. Health,1997
3. Plant Design for Safety: A User-Friendly Approach;Kletz,1990
4. Promoting Road Safety in the EU: the Programme for 1997-2001,1997
5. Recommendations of the Group of Experts on Safety in Road Tunnels,2001