At National level, to strengthen its action, TTS Italia collaborates with several associations: Club-Italia,  Federmobilità, Freight Leaders Council, OITA, and  PIARC. Finally, TTS Italia is a member of the National Sharing Mobility Observatory.

At International level, TTS Italia is a member of IRF Global (International Road Federation Global), and of the ITS National Associations Network promoted by ERTICO and has relationships with similar ITS Associations all over the world to evaluate and develop common strategies and actions.

Members of the ITS Network are:

• ITS Austria / Austriatech
• ITS Belgium
• ITS Denmark
• ITS Estonia
• MLC ITS Euskadi
• ITS Finland
• ITS France
• ITS Germany e.V.
• ITS Hellas
• ITS Hungary
• ITS Ireland
• TTS Italia
• ITS mobility e.V.
• Connekt / ITS Netherlands
• ITS Norway
• Polish Association of Transport Telematics
• ITS Polska
• ITS Portugal
• ITS Romania
• ITS&S Czech and Slovak
• ITS Slovenia
• ITS Spain
• ITS Sweden
• ITS Switzerland
• ITS Turkey
• ITS UK