Greater mobility inquiry ever held in Portugal, which included inquiries Source/Destination and Motivational, and classified traffic counts on 54 stations of the National Road Network. Field work with the duration of one month, involving more than 100 employees (enumerators, census takers and coordinators). More than 50.000 origin/destination inquiries carried. Inquiries on Main and Complementary roads (performed in sections(, on highways (in tolls and service areas) and on other roads of RRN.
