An evaluation of public opinion about congestion pricing and tollsCyrus G. Ulberg · First published 1995Open the Tome
Road weather information systemsCyrus Ulberg, Donald Ernst, Edward Boselly, Stanley Dore, Jon Thornes, Strategic Highway Research Program (U.S.) · First published 1993Open the Tome
Issues in the shift from regional to local provision of bus serviceCyrus G. Ulberg · First published 1990Open the Tome
