Idaho Code
Idaho Code

Idaho Code § 49-903 (2026)

When lighted lamps are required. 

✓ current as of May 2026
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When lighted lamps are required. 

Every vehicle upon a highway at any time from sunset to sunrise and at any other time when there is not sufficient light to render clearly discernible persons and vehicles on the highway at a distance of five hundred (500) feet ahead shall display lighted lamps and illuminating devices as here respectively required for different classes of vehicles, subject to exceptions with respect to parked vehicles as stated herein.

Notes of Decisions
Cited in 10 cases (1 in the last 5 years), 1997–2022 · leading case: State v. Evans, 6 P.3d 416 (Idaho Ct. App. 2000).
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State v. Evans, 6 P.3d 416 (Idaho Ct. App. 2000). · cites it 12× “Idaho Code § 49-903 provides as follows: Every vehicle upon a highway at any time from sunset to sunrise and at any other time when there is not sufficient light to render clearly discernible persons and vehicles on the highway at a distance of five hundred (500) feet ahead…”
State v. Islas, 443 P.3d 274 (Idaho Ct. App. 2019). · cites it 4× “The State made two arguments in its written opposition to the motion to suppress: first, that the officer had reasonable and articulable suspicion that a traffic offense had been committed because the officer observed a violation of I.C. § 49-903 ; and second, the extension of…”
State v. Irwin, 137 P.3d 1024 (Idaho Ct. App. 2006). · cites it 2× “Idaho Code § 49-903 mandates that headlights be lit between sunset and sunrise, and I.”
Mugavero v. A-1 Auto Sales, Inc., 944 P.2d 151 (Idaho Ct. App. 1997). · cites it 6× “Bales and Mugavero assert that such duty stems from Idaho Code § 49-903 , which requires that safety devices be carried in: *557 [e]very vehicle upon a highway at any time from sunset to sunrise and at any other time when there is not sufficient light to render clearly…”
Tiegs v. Robertson, 236 P.3d 474 (Idaho Ct. App. 2010). · cites it 2× “§ 49-916 and I.C. § 49-903 require owners of implements of husbandry to have operational lighting systems at all times.”
State v. Islas (Idaho Ct. App. 2018). · cites it 4× “The State made two arguments in its written opposition to the motion to suppress: first, that the officer had reasonable and articulable suspicion that a traffic offense had been committed because the officer observed a violation of I.C. § 49-903; and second, the extension of…”
State v. Islas (Idaho Ct. App. 2019). · cites it 4× “The State made two arguments in its written opposition to the motion to suppress: first, that the officer had reasonable and articulable suspicion that a traffic offense had been committed because the officer observed a violation of I.C. § 49-903; and second, the extension of…”
State v. Frandsen (Idaho Ct. App. 2020). · cites it 2× “”) (emphasis added); see also I.C. § 49-903 (requiring vehicles on highways to have headlights).”
State v. Davis (Idaho Ct. App. 2020). · cites it 2× “§ 49-906(1); see also I.C. § 49-903 (requiring lights visible at a distance of 500 feet from sunset to sunrise).”
Watkins v. Idaho Transp. Dep't (Idaho Ct. App. 2022). · cites it 2× “For example, the statutory scheme uses the phrase “extreme rear end” when it wished to regulate the lights on loads that project past the body of a vehicle: Whenever the load upon any vehicle extends to the rear four (4) feet or more beyond the bed or body of the vehicle, there…”
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