Unfortunately I don't have a bike path/MUP on my way to work. I'd hardly classify myself as a roadie. I ride either an old Bianchi Grizzly or a single speed coaster brake bike I use in bad weather. I live very close to a bike path/MUP but it doesn't go in the direction I need to go for work. I have no choice but to ride in heavy traffic downtown in the morning and coming home in the afternoon. Granted it only takes me 15 mins but if I were to take public transit or drive it takes me 30 mins including traffic and parking if I drove a car. Sometimes if I have to go visit friends I will use the the bike path if it is convenient but again I am not zipping along at 20-30mph. Our bike path also has signs up warning you not to ride in excess of 12 miles per hour (20kph).