           IN THE UNITED STATES COURT OF APPEALS
                    FOR THE FIFTH CIRCUIT  United States Court of Appeals
                                                    Fifth Circuit

                                                                            FILED
                                                                           June 17, 2008
                                     No. 07-40783
                                   Summary Calendar                   Charles R. Fulbruge III
                                                                              Clerk




UNITED STATES OF AMERICA,

                                                  Plaintiff-Appellee,

v.

SERGIO RUBALCABA-RAMIREZ,

                                                  Defendant-Appellant.




                   Appeal from the United States District Court
                        for the Southern District of Texas
                                 No. 2:07-CR-18-1




Before SMITH, BARKSDALE, and ELROD, Circuit Judges.
PER CURIAM:*


       Sergio Rubalcaba-Ramirez appeals his conviction of and sentence for pos-
session with intent to distribute more than five kilograms of cocaine. He argues


       *
         Pursuant to 5TH CIR. R. 47.5, the court has determined that this opinion should not
be published and is not precedent except under the limited circumstances set forth in 5TH CIR.
R. 47.5.4.
                                    No. 07-40783

that he was subjected to an illegal traffic stop because his conduct did not violate
a state statute and that his stop was not supported by an informant’s tip because
no new indicia of probable cause was discovered after a fruitless search at the
border checkpoint.
      The government failed to address the validity of the traffic stop, relying in-
stead on the reasonable suspicion arising from the informant’s tip. Rubalcaba-
Ramirez contends the government has waived and effectively conceded the issue.
This court, however, is not bound by the government’s concession of error. See
United States v. Claiborne, 132 F.3d 253, 254-55 (5th Cir. 1998) (per curiam).
      We examine the legality of police investigatory stops based on (1) whether
the officer’s action was justified at its inception and (2) whether the officer’s sub-
sequent actions were reasonably related in scope to the circumstances that justi-
fied the stop. United States v. Brigham, 382 F.3d 500, 506 (5th Cir. 2004) (en
banc) (citing Terry v. Ohio, 392 U.S. 1, 19-20 (1968)). A decision to stop a vehicle
is reasonable where the officer has probable cause to believe that a traffic viola-
tion has occurred. Whren v. United States, 517 U.S. 806, 810 (1996).
      Rubalcaba-Ramirez was stopped for driving on an improved shoulder. He
contends that his conduct was not a traffic violation under state law and cites
several state court decisions. Those decisions are distinguishable in that they
involve traffic stops for failing to drive in a single lane of traffic.
      Rubalcaba-Ramirez was not stopped for that violation. Instead, he violat-
ed TEX. TRANSP. CODE ANN. § 545.058, driving on an improved shoulder. Though
there are exceptions to that prohibition, Rubalcaba-Ramirez does not claim one.
His conduct objectively justified the stop, and there was probable cause to stop
him. See Whren, 517 U.S. at 810; see also United States v. Lopez-Valdez, 178
F.3d 282, 288 (5th Cir. 1999). Because the stop was justified, it is unnecessary
to address his challenge to the stop based only on the informant’s tip. Ac-
cordingly, the judgment is AFFIRMED.



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