C-ITS deployment is underway and initially progressed in corridor projects and pilots all over Europe. The Amsterdam Group and the CODECS partners aim on harmonising the ongoing activities in these various deployment hot spots. They have jointly set up a series of public workshops to discuss their work with other stakeholders and interested organisations. After the „C-ITS Deployment is underway!“ workshops in September 2015 in Roskilde in Denmark and in April 2016 in Amsterdam, this third edition features the C-ITS Strategy of the European Commission and reports about the state of play in the C-ITS Platform. It also focuses on the newly established CEF supported projects C-Roads and Intercor and provides ongoing corridor initiatives and pilots with a platform to report their progress in making cooperative road traffic a reality. They will give a status update with regard to lessons-learned, identified deployment challenges as wel