I use Metro-Rail every morning coming to work and every afternoon coming home. I ride 6.5 mi. from home to the Norwalk Metro Station (Green Line). That's where the train originates on the eastern end.
I ride the Metro for 11 miles to the Harbor Freeway station, then ride 1.5 mi. to work. I do have a folding bike (DaHon Curve SL 8-Spd) so it folds up fairly small (16" wheels) for the Metro ride. Never had any trouble from the Metro Police or the other passengers.
Sometimes passengers have questions about the folding bike, but not very often.
Fare is $1.50 each way.
Rick / OCRR