Cape Cod Regional Transit Authority Share: Transportation Cape Cod Regional Transit Authority Visit Website 215 Iyannough Road (Rt. 28) Hyannis, MA 02601 (508) 775-8504 (508) 775-8513 (fax) About Map About Public transportation service serving all of Cape Cod. Service includes local bus routes, summer shuttles, demand response transit, Boston hospital and human service transportation. What's Nearby? Distance: 5 10 15 20 25 50 mi.