Tex. Transp. Code § 545.102 : TRANSPORTATION CODE — VEHICLES AND TRAFFIC — RULES OF THE ROAD — OPERATION AND MOVEMENT OF VEHICLES — TURNING AND SIGNALS FOR STOPPING AND TURNING — Turning on Curve or Crest of Grade TEXT PDF An operator may not turn the vehicle to move in the opposite direction when approaching a curve or the crest of a grade if the vehicle is not visible to the operator of another vehicle approaching from either direction within 500 feet. Tex. Transp. Code § 545.102 Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.