Right Shoulder

According to Texas law an operator may drive on an improved shoulder to the right of the main traveled portion of a roadway if that operation is necessary and may be done safely, but only:

• to stop, stand, or park;
  
• to accelerate before entering the main traveled
  lane of traffic;
  
• to decelerate before making a right turn;
  
• to pass another vehicle that is slowing or stopped
  on the main traveled portion of the highway, disabled, or preparing
  to make a left turn;
  
• to allow another vehicle traveling faster to pass;
  
• as permitted or required by an official
  traffic-control device; or
  
• to avoid a collision.