Which states have well-structured graduated driver licensing laws?

North Dakota, Wisconsin, Minnesota, and Iowa each have structured GDL frameworks that include nighttime driving restrictions, supervised learner phases, and—in most cases—passenger limits. The specifics differ meaningfully across the four states:

• North Dakota stands out with one of the earlier nighttime curfews nationally — 9 p.m. or sunset, whichever comes later.
• Iowa requires one of the longest learner phases in the country at 12 months.
• Wisconsin and Minnesota both impose midnight curfews and passenger limits during the intermediate phase.
• A lawyer from Nicolet Law can clarify how your state's specific GDL requirements affect your rights after a crash.

How Graduated Driver Licensing Laws Vary by State — and Which States Protect New Drivers Best

Graduated driver licensing (GDL) laws vary significantly across America, from comprehensive three-stage systems with nighttime restrictions and passenger limits to minimal requirements that offer little structured protection for new drivers.

States including North Dakota, Wisconsin, Minnesota, and Iowa have developed GDL frameworks that researchers link to lower teen crash rates compared to states with weaker systems. The protections each state offers are not identical, however, and the specifics, curfew timing, learner phase length, and passenger rules, affect both road safety and how liability is analyzed when accidents occur.

Understanding where your state's system falls on that spectrum, and what gaps may exist, helps families see why legal guidance matters when accidents happen despite these protections.

If a new driver accident has already happened in your family, a lawyer from Nicolet Law can evaluate what protections were in place and what your legal options may be. Nicolet Law serves clients in Wisconsin, Minnesota, North Dakota, and Iowa, contact us for a free consultation.

Key Takeaways About Graduated Driver Licensing and New Driver Safety

• GDL laws exist in all 50 states, but their protections differ significantly: Each state's system varies in learner phase length, nighttime restriction timing, and passenger rules. Those differences affect both crash rates and how liability is evaluated after accidents.
• Nighttime restrictions and passenger limits are among the most effective GDL tools: Research shows teen driver fatality rates are substantially higher during late-night hours. The earlier and more strictly enforced a curfew, the more protective it tends to be — which is why North Dakota's sunset/9 p.m. restriction stands out among the four states Nicolet Law serves.
• Filing deadlines vary by state and can eliminate the right to recover compensation if missed: In Wisconsin, the personal injury statute of limitations is three years under Wis. Stat. § 893.54. In Minnesota, it is six years under Minn. Stat. § 541.05. Attorneys at Nicolet Law track these deadlines from the outset to help protect your rights.
• Comparative fault rules can reduce recovery even when a new driver is not primarily at fault: Wisconsin, Minnesota, North Dakota, and Iowa all apply modified comparative fault principles. If the new driver is found partly responsible, recovery may be reduced. Documenting compliance with GDL requirements can support the driver's legal position.

What Graduated Driver Licensing Actually Does

Graduated driver licensing is a three-stage system designed to reduce crash risk for beginning drivers.

The learner's permit stage allows supervised driving only. The intermediate (probationary) stage focuses restrictions on nighttime driving and passenger limits. The full license stage removes restrictions.

The science is consistent: states with nighttime restrictions see reductions in late-night fatal crashes among teen drivers compared to states without them. Research through the National Highway Traffic Safety Administration shows that fatality rates for 16- and 17-year-old drivers are substantially higher between 10 p.m. and 5:59 a.m. compared to daytime driving.

Passenger restrictions similarly reduce crashes by limiting in-vehicle distraction during the most vulnerable phase of learning.

GDL's effectiveness depends entirely on how each state's law is written. A state that starts nighttime restrictions at 9 p.m. provides different protection than one that starts at midnight or 12:30 a.m. A state with no passenger limits offers no buffer against in-vehicle distraction. Understanding where your state falls on that spectrum matters if an accident occurs.

How Graduated Licensing Works: Wisconsin, Minnesota, North Dakota, and Iowa

Wisconsin

Wisconsin requires beginning drivers to hold a learner's permit for a minimum of 6 months. During this phase, all driving must be supervised by an adult who has been licensed for at least two years. Acceptable supervisors include:

• A driving instructor who is at least 19 years old.
• An immediate family member who is at least 19 years old.
• A general adult 21 or older, who must be designated by a parent for drivers under 18.
• Note: At night, the required minimum age for the supervising adult is 25.

Once intermediate (probationary) status is reached, nighttime restrictions apply: no unsupervised driving between midnight and 5 a.m. Passenger restrictions limit intermediate license holders to no more than one non-family passenger.

These restrictions remain in place for nine months, or until the driver turns 18.

Wisconsin's GDL system is considered well-structured and evidence-based. Its tiered supervision requirements, which distinguish between family members, instructors, and other adults, with additional safeguards after dark, and its consistent enforcement of both nighttime and passenger limits reflect a thoughtful approach to reducing crash risk. 

While a midnight curfew is common across many U.S. states, Wisconsin's nine-month intermediate restriction phase and carefully layered supervision rules provide meaningful support during the transition to solo driving.

For full Wisconsin GDL requirements and updates, see the Wisconsin DOT teen driver licensing page.

Minnesota

Minnesota's GDL system shares the same three-stage structure as Wisconsin's — learner permit, intermediate license, full license — but the specific requirements differ in important ways.

Learner's permit holders must have a licensed adult present at all times. For permit holders under 18, that adult must be a certified driver education instructor, the permit holder's parent or guardian, or another licensed driver at least 21 years old. For permit holders 18 and older, any licensed adult may supervise.

The intermediate (probationary) license restricts nighttime driving between midnight and 5 a.m. for the first six months, unless a licensed driver 25 years or older is present or an exemption applies. This curfew lifts after the first six months or when the driver reaches age 18.

Minnesota's passenger limits progress over time: only one teenage passenger is allowed during the first six months of the intermediate license. After that period, up to three teenage passengers are permitted. Both limits are waived when a parent or guardian is present.

Minnesota has maintained this system since 1999, well before many other states adopted comparable restrictions.

For full Minnesota GDL requirements and updates, see the Minnesota Department of Public Safety graduated driver's license page.

North Dakota

North Dakota requires a 12-month learner's permit phase for those under 16, and a 6-month phase for drivers 16 and older. Once the driver reaches 18, there is no mandatory holding period. Full supervision is required throughout the learner phase.

Intermediate license holders face nighttime restrictions between 9 p.m., or sunset, whichever comes later, and 5 a.m. Exemptions exist for work and school travel. North Dakota does not impose a specific passenger cap; intermediate drivers may carry as many passengers as the vehicle's official seating capacity allows.

Among the four states Nicolet Law serves, North Dakota has the earliest nighttime curfew, a threshold that research links to meaningful reductions in late-night crash risk for new drivers. 

Both the restriction and the extended learner phase for younger drivers are consistently enforced across the state, including in rural areas where longer emergency response times can increase the severity of crashes.

For full North Dakota GDL requirements and updates, see the North Dakota DOT learner's permit and licensing requirements page.

Iowa

Iowa requires 12 months of learner permit driving, making it one of the longest learner phases in the country. Intermediate license holders cannot drive between 12:30 a.m. and 5 a.m. unless accompanied by a licensed parent, guardian, or custodian, or a family member at least 21 years old. 

Any non-family member must be at least 25 and have parental permission. A waiver is available for drivers who must travel to or from work or school during those hours.

The nighttime restriction can be lifted after 12 months or once the driver turns 18.

Passenger restrictions limit intermediate drivers to one non-related teenage passenger unless a supervising adult is present, for the first six months. Parents may waive that limitation. Iowa's extended learner phase is one of its most significant protections — research consistently shows that more supervised driving hours before solo licensure reduces crash risk.

For full Iowa GDL requirements and updates, see the Iowa DOT intermediate license page.

How Weak Graduated Licensing Creates Gaps and Legal Risk

When states have weak GDL regulations, these gaps create environments where new drivers face preventable risks—and where liability questions become harder to answer after accidents.

The Problem With Weak or Missing Nighttime Restrictions

States without nighttime restrictions, or with restrictions that start at midnight or later, fail to protect during peak danger periods. According to NHTSA research on GDL nighttime restrictions, 16- and 17-year-olds take only about 11% of their trips between 9 p.m. and 5:59 a.m., yet those trips account for nearly one-third of fatal crash involvement in that age group.

States with no nighttime restrictions effectively allow new drivers to face the most dangerous conditions during the most vulnerable phase of their development.

When a new driver is involved in a nighttime accident in a state with weak or no nighttime restrictions, the liability analysis changes because fewer safeguards are in place. A lawyer can still investigate whether the other driver exploited predictable new-driver behavior patterns, and whether other parties bear responsibility.

Passenger Restriction Gaps

Research confirms that teenage passengers significantly distract new drivers. Studies have documented a meaningful increase in teen crashes caused by distracted driving behaviors including loud conversation, horseplay, and cognitive distraction from peers in the vehicle.

When an accident involving teenage passengers occurs in a state without passenger restrictions, a lawyer may find that the crash was foreseeable and preventable — and help determine how liability is distributed across parties.

What is the Difference Between Strong vs. Weak GDL Systems

Research identifies several features associated with more protective GDL systems:

• Early nighttime restrictions — ideally 10 p.m. or earlier. Among the four states Nicolet Law serves, North Dakota's sunset/9 p.m. curfew meets this threshold. Wisconsin and Minnesota start at midnight; Iowa starts at 12:30 a.m.
• Strict passenger limits during the intermediate phase — typically 0 to 1 non-family passenger. Wisconsin, Minnesota, and Iowa include these limits; North Dakota defers to vehicle capacity.
• Long learner phases of 6 or more months. Iowa's 12-month requirement stands out nationally. Wisconsin and Minnesota require 6 months; North Dakota requires 12 months for drivers under 16 and 6 months for those 16 and older.
• Consistent enforcement, including in rural areas where crash severity tends to be higher.

Weak GDL systems lack one or more of these features. Some allow unsupervised driving at 15 or younger. Some have nighttime restrictions starting at midnight or later. Some allow multiple teenage passengers. Some have minimal learner phase requirements.

The data backs up the difference: states with comprehensive GDL systems rated as "good" by IIHS have 30% lower fatal crash rates among 15- to 17-year-olds compared to states rated "poor."

States rated "fair" still achieve an 11% reduction. The protection is measurable, meaningful, and legally significant.

Legal Implications When GDL Laws Are Strong vs. Weak

When a new driver following strong GDL laws is injured in an accident, liability questions center on other contributing factors:

• Was the other driver negligent?
• Did road conditions play a role?
• Was the at-fault driver speeding or distracted?

If met, the state's strong protections establish a baseline assumption that the new driver was as prepared as state law allowed.

When a new driver protected by weak GDL laws is injured, the analysis expands. Was the accident foreseeable, given the state's minimal protections? Did inadequate state-level safeguards allow preventable risk? Were other drivers or the road environment responsible for crashes that strong GDL laws would have prevented?

Conversely, when a new driver causes an accident in a state with strong GDL protections, the driver's liability can be measured against what rules were followed, or what other circumstances may have contributed to the accident. Insurance companies will often keep a close eye on new driver conduct.

When a new driver causes an accident in a state with weak GDL laws, a lawyer may argue that inadequate state protections contributed to the crash by failing to limit dangerous situations the driver was legally allowed to enter.

This doesn't eliminate driver responsibility, but it distributes liability across multiple parties and contexts.

What Parents and New Drivers Should Know About Their State's GDL Law

Know Your State's Requirements

North Dakota, Wisconsin, Minnesota, and Iowa drivers should familiarize themselves with learner permit duration, nighttime restrictions, and passenger limits. Knowing these rules and following them consistently demonstrates responsibility and reduces legal exposure.

Understand the Reason Behind Each Restriction

Nighttime restrictions exist because teen drivers are 5 times more likely to be killed while driving at night than during the day.

Passenger restrictions exist because teenage passengers in vehicles with teen drivers increase distraction and crash risk.

Understanding the science behind these rules helps new drivers internalize why they matter.

Recognize That Strong GDL Laws Reduce Liability for Young Drivers

Compliance with stringent state GDL laws helps protect a new driver's legal position in the event of an accident.

Documentation showing that the new driver complied with all state restrictions helps a lawyer demonstrate that the driver wasn't engaging in reckless behavior, wasn't distracted by multiple passengers, and wasn't driving during peak-danger hours.

Compliance strengthens settlements and reduces comparative fault assignments.

Know When Your Driver Is Most Vulnerable

In states like Wisconsin, Minnesota, North Dakota, and Iowa, new drivers are most vulnerable during the intermediate license phase, particularly when driving alone at night or with passengers. Parents can provide extra supervision during these windows, which further reduces risk.

When to Involve a Lawyer After a New Driver Accident

Contact a lawyer immediately if:

• The new driver was injured despite following all GDL restrictions in your state
• The accident involved violations of GDL restrictions and liability is disputed
• You're unsure whether your state's GDL protections were adequate or followed
• Settlement offers from insurance companies seem low or liability is unclear
• The accident occurred in a state with weak GDL protections and multiple parties may bear responsibility

A lawyer can investigate whether the accident happened despite compliance with GDL requirements, whether other drivers exploited predictable gaps, or whether road conditions created foreseeable danger.

FAQs About Graduated Driver Licensing Laws and New Driver Accidents

What is graduated driver licensing?

Graduated driver licensing is a three-stage system that introduces driving privileges gradually, a supervised learner's permit phase, a restricted intermediate phase with nighttime and passenger limits, and a full unrestricted license. Every state has its own version, but the specifics vary. When an accident occurs during any phase, those rules typically shape how liability is analyzed.

Does following GDL rules affect a teen driver's injury claim?

It may. Documentation showing a new driver was within their state's permitted hours and passenger limits can help establish they were not behaving recklessly, which may reduce comparative fault assignments. A lawyer from Nicolet Law can evaluate how your state's specific GDL requirements apply to your claim.

Which of the four states Nicolet serves has the strictest GDL law?

Each state has different strengths. North Dakota has the earliest nighttime curfew among the four, 9 p.m. or sunset, whichever comes later. Iowa has one of the longest learner phases nationally at 12 months. Wisconsin and Minnesota include tiered supervision rules and passenger limits. A lawyer from Nicolet Law can explain which rules apply to your situation.

How long do I have to file a claim after a crash involving a teen driver?

It depends on the state. Wisconsin's general personal injury deadline is three years under Wis. Stat. § 893.54; Minnesota's is typically six years under Minn. Stat. § 541.05. North Dakota and Iowa have their own timelines, and exceptions can apply. Speak with an attorney at Nicolet Law to learn more about what deadlines apply to your specific case.

Can a teen driver still recover compensation if they were partly at fault for the accident?

In many cases, yes. Wisconsin, Minnesota, North Dakota, and Iowa all use modified comparative fault rules that typically allow recovery unless the injured party's share of fault exceeds a set threshold. Any assigned fault reduces recovery proportionally. Attorneys at Nicolet Law can evaluate how fault may be distributed in your specific case.

What should parents do after a car accident involving a new driver?

Document the scene, collect contact information for all parties and witnesses, and note whether the new driver was within their state's GDL restrictions at the time. Seek medical evaluation promptly, as some symptoms take days to appear. Contacting an attorney at Nicolet Law early helps preserve evidence and clarify your options.

Understanding Your Rights After a GDL-Related Accident

The GDL framework in your state shapes both road safety and the legal analysis of what happened when a crash occurs. If a new driver was injured while fully complying with their state's requirements, liability may rest with other parties or road conditions. If a driver violated GDL restrictions, liability questions become more layered.

Understanding the specific rules that applied — whether it's Wisconsin's tiered supervision requirements and nine-month intermediate restriction phase, Iowa's extended 12-month learner period, Minnesota's progressively relaxing passenger limits during the probationary phase, or North Dakota's earlier sunset/9 p.m. nighttime curfew — helps you assess what happened and what legal options may be available.

Attorneys at Nicolet Law serve Wisconsin, Minnesota, North Dakota, and Iowa and work to understand the GDL framework specific to each state. We can investigate accidents involving new drivers, analyze whether state-level protections were in place and followed, and work to build a claim that reflects the full picture of what occurred.

If you were injured in a crash, contact the car accident lawyers at Nicolet Law for a free consultation. We evaluate your state's GDL framework, the protections in place, and the compensation you may be entitled to recover. You can reach out online or by calling 1-855-NICOLET.