Understand passing and shoulder movements

By Jacob Alford

Identify the passing movement and the part of the roadway used. Passing on the right is not prohibited in every circumstance, and an improved shoulder can lawfully be used for specified reasons when safe. Record the actual width, pavement, markings and traffic rather than applying a blanket “off the lane means illegal” rule.

Questions this group helps answer:

• Did the passing driver crowd my vehicle or run out of room because of oncoming traffic?
• When is passing on the right allowed?
• Is every use of an improved shoulder illegal?
• How do codes 58 and 79 differ?
• What makes a zone a no-passing zone?

26. Failed to pass to left safely

Meaning in the report: A vehicle passing on the left infringed on the space of the vehicle being overtaken.

What needs explaining: The manual expressly distinguishes this from code 53, which concerns insufficient clearance involving oncoming traffic. Which vehicle’s space was invaded during the pass or return to lane?

Limits and qualifications: A passing collision needs the geometry of the maneuver, not simply the statement that someone was passing.

Related law and scope: Passing must be at a safe distance and the passing operator may not move back right until safely clear of the passed vehicle.

Sources: TxDOT definition, page 138; Transportation §545.053(a).

Further care: The statutory duty covers clearance from the passed vehicle. Opposing-traffic clearance is separately addressed in factor 53/§545.054.

27. Failed to pass to right safely

Meaning in the report: A vehicle passing on the right infringed on the space of the vehicle being overtaken.

What needs explaining: Establish an unsafe pass to the right and how it contributed. Was passing to the right permitted in that road configuration, and did the movement remain on a lawful travel surface?

Limits and qualifications: Not every pass on the right is prohibited; statutory conditions and safe movement matter.

Related law and scope: Subsection (a) requires safe conditions, a vehicle making or about to make a left turn, and a qualifying roadway: either unobstructed pavement not occupied by parked vehicles and wide enough for at least two moving lines in each direction, or an unobstructed one-way roadway wide enough for at least two moving lines. Subsection (b) prohibits leaving the main traveled roadway except as §545.058 permits.

Sources: TxDOT definition, page 138; Transportation §545.057; Transportation §545.058(a)–(c) (related provision).

Further care: The manual focuses on infringing on the passed vehicle’s space and does not recite the full legality conditions. The left-turn and roadway requirements are cumulative under §545.057(a); qualifying improved-shoulder movements have separate permission under §545.058.

53. Overtake and pass insufficient clearance

Meaning in the report: A passing vehicle lacked room to return right safely because of oncoming traffic, interfering with oncoming or overtaken traffic.

What needs explaining: This is the oncoming-clearance problem, distinct from merely crowding the overtaken vehicle under code 26. How far away was oncoming traffic, and where could the passing driver safely return?

Limits and qualifications: Use the full passing sequence rather than treating all unsafe passes as the same factor.

Related law and scope: Left-of-center passing requires authorization, clear view and an opposing-traffic gap sufficient not to interfere with the passed or approaching vehicle. Subsection (b) adds returning before coming within 200 feet of opposing traffic when using its lane, otherwise as soon as practicable.

Sources: TxDOT definition, page 140; Transportation §545.054(a); Transportation §545.054(b) (related provision).

Further care: Manual’s cited (a) does not itself state the 200-foot return rule. Distinguish this from insufficient clearance from the passed vehicle under factor 26.

57. Passed in no passing lane

Meaning in the report: Passing in a designated no-passing zone contributed to the crash.

What needs explaining: The code-sheet wording says lane; the manual definition describes a no-passing zone. What official markings or signs applied where the pass occurred?

Limits and qualifications: The printed lookup label says lane; the legal rule concerns a no-passing zone.

Related law and scope: Subsection (a) requires obedience to properly present and clearly visible no-passing signs/markings; (b) bans left-side driving in the zone or beyond its striping but permits crossing the striping/centerline to turn left into or out of an alley/private road/driveway.

Sources: TxDOT definition, page 141; Transportation §545.055.

Further care: A no-passing marking is not an absolute ban on every leftward crossing. Verify that this was passing and that the sign/marking was clearly visible.

58. Passed on shoulder

Meaning in the report: Illegal overtaking or passing on either the left or right shoulder contributed.

What needs explaining: The current full definition covers both sides. Code 79 addresses illegal shoulder driving when not passing. Was the movement a pass, which shoulder was used, and did a statutory permission apply?

Limits and qualifications: Some improved-shoulder movements are permitted if all statutory conditions are met; do not state a blanket ban.

Related law and scope: Section 545.057(b) yields to improved-shoulder exceptions. Section 545.058(a)(4) allows necessary, safe right-shoulder passing of a vehicle slowing/stopped on the main highway, disabled, or preparing a left turn. Read all (a)–(c) conditions and left-shoulder restrictions.

Sources: TxDOT definition, page 141; Transportation §545.057; Transportation §545.058; Transportation §541.302(6),(11),(15) (related provision).

Further care: Shoulder passing is not categorically illegal. The current standalone code sheet and embedded manual p. 20 say Passed on Shoulder; the manual p. 133 summary table shortens it to right shoulder. The factor definition includes both shoulders. Necessary/safe conditions and emergency/police/bicycle/slow-vehicle exceptions matter.

79. Drove on improved shoulder

Meaning in the report: Illegal driving on an improved shoulder while not passing contributed.

What needs explaining: The manual directs illegal shoulder passing to code 58 instead. Why was the shoulder used, was it improved and was the movement safely permitted by statute?

Limits and qualifications: Improved-shoulder driving has enumerated lawful uses; mere presence on the shoulder is not enough.

Related law and scope: Improved shoulder means paved shoulder. Section 545.058(a) allows necessary and safe right-shoulder driving for 7 listed purposes; (b) permits specified safe left-shoulder uses; (c) gives emergency/police/bicycle/slow-vehicle exceptions.

Sources: TxDOT definition, page 143; Transportation §545.058; Transportation §541.302(6),(11),(15) (related provision).

Further care: Factor 79 excludes passing, which the manual assigns to 58. Mere shoulder presence is not a violation: assess purpose, necessity, safety, side and exceptions.

Attorney reviewed by Jacob Alford · November 11, 2026