Due to its strategic location in the northwest of the Iberian Peninsula, the APDL, Port Authority of Douro, Leixões and Viana do Castelo, occupies a privileged position. 

APDL, following European guidelines and under the Douro’s Inland Waterway 2020 Project, has designed and implemented River Information Services for the Douro Waterway and undertakes projects increasing its safety conditions and operational performance, namely smooth traffic flow, through studies with pilots with a set of solutions for future scale up implementation.