| Member | Type | Country |
|---|---|---|
| ROVIMATICA S.L. | A-Member | Spain |
| S&N Orion Prime S.A. | A-Member | Portugal |
| SAF Tehnika | A-Member | Latvia |
| SafeTRANS e.V. | Associate | Germany |
| Saint Petersburg State University of Aerosp. Instrument. | B-Member | Russian Federation |
| Sandvik Mining & Construction Oy | C-Member II | Finland |
| Sapienza University of Rome | B-Member | Italy |
| Schneider Electric Industries S.A.S. | C-Member II | France |
| SETA S.p.A. (Società Emiliana Trasporti Autofiloviari) | C-Member I | Italy |
| Seven Solutions S.L. | A-Member | Spain |
| Siemens AG | C-Member II | Germany |
| SINTEF AS | B-Member | Norway |
| Sirris | B-Member | Belgium |
| Slovak University of Technology in Bratislava | B-Member | Slovakia |
| Smartesting Solutions & Services | A-Member | France |