Unincorporated county road speed limit in Oregon is 55 MPH. The road in front of my house is 55 MPH. I Have seen bicycles riding two wide going down the road. They are doing 5 MPH and weigh in around 200 pounds. I am driving at 55 MPH and weigh in around 3,000 pounds in my car and a bit more in my truck. That makes me 10X bigger and faster. The fun part comes when you find these targets parked and you ask them what the speed limit is on the road they are riding on. They haven't got a clue. When they find out, they are a bit surprised and usually ride off into the sunset not to return. if you get a chance, nicely educate the targets as to the intelligence of riding on a freeway and use some physics to go with it. Then they might ride back into town and sell the bike to the next target.