one way streets

1st Ave. North Is  One Way
1st Ave. North Is One Way
1st Ave. North Is One Way
I go down to the parking garage every day to smoke (bad habit I know) and every day almost, someone will be going north on 27th and hang a right onto 1st ave. north. I have to laugh every time because it is clearly marked and they sure freak out when the oncoming cars almost take them out...