Late last year, the District announced  a ban on illegal U-turns across the Pennsylvania Avenue bike lanes — even if no bicycle riders were present during those U-turns.

Well, officials really want to make sure people know they shouldn’t be making those U-turns. So D.C. police officers, traffic control officers from the District Department of Transportation and cab inspectors from the D.C. Taxicab Commission will be teaming up to hand out fliers and citations in the lanes Wednesday.

This public event is meant to serve as the final warning before officers stop giving out warnings and start handing out fines.

The ban, put in place by Mayor Vincent D. Gray (D) on Dec. 1, mandates that any illegal U-turn (even without bicycle riders around) will result in a fine of $100. Police have been giving out warnings since the ban was announced last November, according to police spokeswoman Gwendolyn Crump.

They will continue to issue warnings, but not fines, Wednesday. Beginning Thursday, however, they will be issuing $100 fines.

Officials will be patrolling the bike lanes near Pennsylvania Avenue and 13th Street NW on Wednesday between 11 a.m. and 1 p.m. Expect a higher police presence in that area.