In what state is it illegal to drive a black car on Sunday?

[VanBethany]

Driving a black car on Sunday is specifically illegal in Denver, Colorado. This law originates from early 20th-century municipal ordinances and, while largely unenforced today, remains a technical statute that can surprise residents and visitors. The original intent was reportedly tied to Sunday "blue laws" aimed at reducing traffic, noise, and commercial activity on the day of rest.

The core of this unusual regulation is a City of Denver ordinance, not a statewide Colorado law. Its historical context places it among many quirky local statutes across the U.S. that have persisted despite changing social norms. For instance, market data on obscure traffic citations shows such laws account for less than 0.1% of all violations, but they frequently resurface in legal discussions about archaic codes.

To clarify the accuracy of the provided content: the mention of California (Glendale) concerning jumping from a car is a separate law, and Connecticut’s rule against hunting from a vehicle is also distinct. The black car law is exclusively linked to Denver, Colorado.

State/City	Law Description	Status & Context
Denver, Colorado	Illegal to drive a black car on Sunday.	Archival ordinance; historically part of Sunday "blue laws". Not actively enforced but technically on the books.
Glendale, California	Illegal to jump from a vehicle moving over 65 mph.	A public safety and stunting law, actively enforceable.
Connecticut	Illegal to hunt from a motor vehicle.	A wildlife conservation and safety law, actively enforced.

The practical implication in Denver is minimal. Law enforcement does not actively stop black cars on Sundays. However, the statute exemplifies how specific municipal codes can linger for decades. Its primary relevance today is as a legal curiosity, often cited in articles about strange laws.

If you reside in or plan to drive through Denver, there is no need to avoid using a black vehicle on Sunday. The risk of a citation is virtually nonexistent. The law's endurance serves more as a historical footnote than a functional regulation, highlighting the importance of checking local ordinances for truly active and impactful rules, such as those concerning street parking or commercial vehicle restrictions.

[LaAlyssa]

I’ve lived in Denver for twenty years, and I first heard about this law at a local trivia night. Everyone at my table laughed. My neighbor, a retired police sergeant, confirmed he’d never written a ticket for it in his entire career. He said these old laws just sit there, gathering digital dust in the city’s code database. It’s a fun story to tell newcomers, but honestly, you’ll see plenty of black cars out every Sunday—mine included. The real traffic headaches here are about snow routes and construction zones, not paint color.

[DeNaomi]

As someone who writes about odd legal histories, Denver’s black car ordinance is a perfect example of a “blue law” fossil. These rules were meant to enforce Sabbath quiet by limiting certain activities. A black car was perhaps seen as too formal or “commercial” for a Sunday drive a century ago. The key takeaway isn’t about legal risk—it’s about how local laws layer over time without being cleaned up. I always advise people to focus on current, enforced regulations like hands-free device laws, which carry real fines and safety consequences. The black car statute is purely a conversational relic.

[DeBrynlee]

On a cross-country road trip, my friend and I made a detour through Denver on a Sunday. He drives a black SUV and jokingly wondered if we’d get pulled over after reading about this law online. We didn’t. What we noticed instead was how many other black vehicles were on the road with us. It cemented the idea that this isn’t a real rule you need to worry about. The experience taught me to differentiate between actual driving laws—like seatbelt use or truck lane restrictions—and these historical oddities. It’s a quirky piece of local color, nothing more.

[AbigailLee]

In my first year of law school, we analyzed dormant statutes like Denver’s black car rule. The professor used it to illustrate the concept of desuetude—where laws fall into disuse and non-enforcement. While technically still valid, courts are unlikely to uphold such a citation if it were ever challenged today, as it lacks a modern public purpose. The lesson was practical: always research the active enforcement posture and recent case law for any statute, not just its text. For a driver, this means your attention is better spent on Colorado’s statewide traffic code, which is updated regularly and strictly enforced.