Texas Transportation Code - TRANSP § 545.058. Driving on Improved Shoulder

(1) to stop, stand, or park;

(2) to accelerate before entering the main traveled lane of traffic;

(3) to decelerate before making a right turn;

(4) 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;

(5) to allow another vehicle traveling faster to pass;

(6) as permitted or required by an official traffic-control device; or

(7) to avoid a collision.

(1) to slow or stop when the vehicle is disabled and traffic or other circumstances prohibit the safe movement of the vehicle to the shoulder to the right of the main traveled portion of the roadway;

(2) as permitted or required by an official traffic-control device; or

(3) to avoid a collision.

(1) an authorized emergency vehicle responding to a call;

(2) a police patrol;

(3) a bicycle; or

(4) a slow-moving vehicle, as defined by Section 547.001.