Arturo Rojas appeals his bench-trial conviction for conspiracy to possess marijuana with intent to distribute and possession of marijuana with intent to distribute. He argues that the district court erred in denying his motion to suppress evidence obtained during a search incident to a traffic stop. He argues that because the officer did not have probable cause for the stop, the subsequent search and seizure of evidence were illegal.

Our review of the record and the parties’ arguments convinces us that the district court did not err in denying the motion to suppress. United States v. Orozco, 191 F.3d 578, 581 (5th Cir. 1999). The officer testified that he stopped Rojas’ vehicle after witnessing him drive on the improved shoulder, a violation of Tex. Trans. Code Ann § 545.058 (Vernon 1999). Thus, the officer had sufficient probable cause to support the initial stop. Whren v. United States, 517 U.S. 806, 810, 116 S.Ct. 1769, 135 L.Ed.2d 89 (1996). Accordingly, the judgment of the district court is AFFIRMED.