1. ECOROADS project www.ecoroadsproject.eu.
2. EU Directive 2004/54/EC on minimum safety requirements for tunnels in the Trans-European Road Network.
3. EU Directive, 2008/96/EC on road infrastructure safety management.
4. HORIZON, 2020 - Work Programme 2014-2015: Smart, green and integrated transport.
5. Open, Open letter to the EU Commissioner on Transport http://www.aipss.it/letter_to_the_commissioner.html.