Kentucky Revised Statutes

Ky. Rev. Stat. § 189.050 (2026)

Rear, side, and clearance lights and lanterns

✓ current as of May 2026
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(1) All motor vehicles shall display at the rear two (2) red lights visible when lighted for at least five hundred (500) feet, unless the motor vehicle was originally equipped with only one (1) such light. (2) A person shall not operate any motor truck or semitrailer truck on any highway unless it is equipped with a red light that automatically indicates the application of brakes and is visible from the rear a distance of not less than five hundred (500) feet. (3) No person shall operate on any highway a motor truck or semitrailer truck having a width of any part in excess of eighty-four (84) inches, unless it carries at least two (2) clearance lights to indicate the outside left limit of the motor truck or semitrailer truck, one (1) light colored white, to be attached to and be visible from the front of the motor truck or semitrailer truck, and two (2) lights colored red, to be attached to and be visible from the rear, in each case a distance of not less than five hundred (500) feet. (4) When in operation on any highway, slow-moving or motorless vehicles, except bicycles and electric low-speed scooters, shall have at least one (1) light on the left side of the vehicle whether from the front or rear, showing white and of sufficient power to reveal clearly the outline of the left side of the vehicle and in such a manner that the outline may be observed clearly by approaching vehicles from a distance of at least five hundred (500) feet. (5) When in operation between sunset and sunrise on any highway, motorless vehicles, except bicycles and electric low-speed scooters, shall have in operation: (a) A four (4) way flasher system, with two (2) flashing yellow or amber lights visible from the front of the vehicle for a distance of at least five hundred (500) feet and two (2) flashing red lights visible from the rear of the vehicle for a distance of at least five hundred (500) feet; or (b) Two (2) reflective lanterns, one (1) on either side of the rear of the vehicle, showing white to the front of the vehicle and red to the rear of the vehicle, with the lantern on the left side of the vehicle situated at least twelve (12) inches higher than the lantern on the right. Effective: June 27, 2019 History: Amended 2019 Ky. Acts ch. 22, sec. 6, effective June 27, 2019. -- Amended 2012 Ky. Acts ch. 53, sec. 1, effective April 11, 2012. -- Amended 2006 Ky. Acts ch. 105, sec. 1, effective July 12, 2006; and ch. 173, sec. 3, effective July 12, 2006. -- Amended 1974 Ky. Acts ch. 101, sec. 3. -- Amended 1966 Ky. Acts ch. 73, sec. 2. -- Recodified 1942 Ky. Acts ch. 208, sec. 1, effective October 1, 1942, from Ky. Stat. sec. 2739g-24, 2739g-50, 2739g-89, 2739g-90.

Notes of Decisions
Cited in 7 cases, 1943–1967 · leading case: Garrison v. Dixie Traction Co., 232 S.W.2d 997 (Ky. Ct. App. 1950).
Garrison v. Dixie Traction Co., 232 S.W.2d 997 (Ky. Ct. App. 1950). “The issues of fact, whether the bus did or did not stop suddenly and whether the stop signal required by KRS 189.050 was so obs.cured by mud as to render it ineffective in this particular case, were for the jury.”
Smith v. Collins, 277 S.W.2d 38 (Ky. Ct. App. 1955). “ible from the rear 500 feet away under ordinary atmospheric conditions, or if there was no light or same may have been incapacitated and not burning at said time and place mentioned in the evidence it was his duty to place no less than three flares or other signals capable of…”
Price v. United States, 50 F. Supp. 676 (E.D. Ky. 1943). “§ 189.050(4). Section 13 of the Act, however (Carroll’s Ky.”
Branch v. Whitaker, 294 S.W.2d 948 (Ky. Ct. App. 1956). · cites it 2× “See KRS 189.050(4). The evidence did not establish that the truck’s rear lights were disabled.”
Walling v. Flynn, 332 S.W.2d 638 (Ky. Ct. App. 1960). · cites it 2× “For reversal, appellants (Walling and the passengers in his car) contend that the court erred in failing to submit their claims to the jury because there was an issue as to whether the tail light on the Flynn car was burning.”
Int'l Harvester Co. v. Huber, 359 S.W.2d 616 (Ky. Ct. App. 1962). · cites it 2× “Appellees’ evidence was that the place where the collision occurred was very dark; that the two outside directional lights, the stop light and the brake light with which the truck was equipped were extremely dirty, so that they were practically dimmed out; and that the truck was…”
Hosch v. Helton, 415 S.W.2d 848 (Ky. Ct. App. 1967). “KRS 189.050. Appellant contends the trial court erred in (1) refusing to instruct the jury that Helton was negligent as a matter of law for failure to have his truck equipped with lights that met the statutory requirements, (2) permitting evidence that his lights were burning at…”
— Ky. Rev. Stat. § 189.050(1) — 1 case
Smith v. Collins, 277 S.W.2d 38 (Ky. Ct. App. 1955). “ible from the rear 500 feet away under ordinary atmospheric conditions, or if there was no light or same may have been incapacitated and not burning at said time and place mentioned in the evidence it was his duty to place no less than three flares or other signals capable of…”
— Ky. Rev. Stat. § 189.050(4) — 3 cases
Price v. United States, 50 F. Supp. 676 (E.D. Ky. 1943). “§ 189.050(4). Section 13 of the Act, however (Carroll’s Ky.”
Branch v. Whitaker, 294 S.W.2d 948 (Ky. Ct. App. 1956). “See KRS 189.050(4). The evidence did not establish that the truck’s rear lights were disabled.”
Int'l Harvester Co. v. Huber, 359 S.W.2d 616 (Ky. Ct. App. 1962). “Appellees’ evidence was that the place where the collision occurred was very dark; that the two outside directional lights, the stop light and the brake light with which the truck was equipped were extremely dirty, so that they were practically dimmed out; and that the truck was…”
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