Car insurance was invented in 1897, when a Dayton, Ohio driver named Gilbert Loomis bought a liability policy from the Travelers Insurance Company. It was essentially a handwritten contract, modeled on existing coverage for horse-drawn carriages and adapted to the new machine, and it protected Loomis if he injured someone or damaged their property while driving. From that single policy, auto insurance grew over the next 128 years into one of the most heavily regulated consumer products in the country.
The First Policy in 1897
Ohio in the late 1890s was a hub of early automobile manufacturing, and the handful of cars on the road shared space with horses, pedestrians, and streetcars. When Loomis asked Travelers for protection against the financial fallout of an automobile accident, the company had no standardized product to sell him. There was no printed form, no actuarial table built for cars, and no regulator reviewing the terms.
Early auto insurance stayed a niche product for wealthy hobbyists for years afterward. Premiums were set case by case, influenced by the policyholder’s occupation, location, and the insurer’s best guess about how dangerous this new technology might be. Some policies covered only bodily injury, others included property damage, and exclusions varied wildly. If you could afford a car, you could probably afford to self-insure, so most drivers simply took their chances.
Why the Voluntary System Failed
For the first three decades of the automobile age, injured parties had one option: sue the driver. Courts applied ordinary negligence principles, meaning the victim had to prove the driver acted carelessly. In practice it was a disaster. Many drivers had no assets to pay a judgment. Lawsuits dragged on for months. Victims with legitimate injuries often recovered nothing, while drivers who caused serious harm walked away because there was no money to collect.
As car ownership exploded in the 1910s and 1920s, the gap between the damage cars could cause and the average driver’s ability to pay became impossible to ignore. Insurers began offering standardized liability policies with clearer coverage limits and exclusions, but buying one remained entirely voluntary. The drivers who most needed insurance were the least likely to carry it.
1927: Mandatory Insurance Arrives
Massachusetts changed the equation on January 1, 1927, when it became the first state to require automobile liability insurance as a condition of vehicle registration. Every car owner in the state had to either show proof of an insurance policy or post a bond covering accident liabilities before they could register their vehicle. The law was controversial, and insurers scrambled to set rates for a product that had never been mandatory before. The state’s insurance commissioner established the first set of compulsory coverage rates in September 1926, months before the law took effect.
Other states adopted their own versions over the following decades, though the pace was uneven. Some required proof of insurance at the point of registration. Others took a “financial responsibility” approach, allowing drivers to go without insurance but requiring them to prove they could pay for damages after an accident, typically through a surety bond or cash deposit. The underlying principle was the same everywhere: if you operate a machine capable of killing someone, you should be able to cover the consequences.
One boundary worth noting. New Hampshire remains the only state that does not mandate auto insurance, though drivers there must still meet financial responsibility requirements if they cause a crash. Every other state now requires minimum liability coverage, typically expressed as three numbers covering bodily injury per person, bodily injury per accident, and property damage.
1945: Why Your State Writes the Rules
A pivotal but often overlooked moment came in 1945, when Congress passed the McCarran-Ferguson Act. The law declared that state regulation of insurance was in the public interest and that no federal law would override state insurance regulations unless it specifically targeted the insurance business.1GovInfo. Act of March 9, 1945 (McCarran-Ferguson Act) This is why you deal with your state’s insurance department when you have a complaint, not a federal agency, and why minimum coverage requirements differ from one state to the next.
Each state built its own regulatory apparatus: departments that approve rates, review policy language, license insurers, and investigate consumer complaints. The National Association of Insurance Commissioners developed model laws to encourage some uniformity across states, covering everything from policy cancellation rules to fraud prevention.2NAIC. Model Laws States can adopt, modify, or ignore these models, which is why your experience buying and using auto insurance in one state can look very different from another’s. Auto insurance remains one of the few major financial products regulated almost entirely at the state level.
1970: The No-Fault Experiment
By the late 1960s, the traditional system of suing the at-fault driver after every accident had produced a mountain of litigation. Courts were clogged with fender-bender lawsuits, attorneys took large percentages of settlements, and injured people waited months or years for compensation. Insurance premiums kept climbing to cover the legal costs.
Massachusetts again led the way, passing the nation’s first no-fault auto insurance law in 1970. The concept was borrowed from workers’ compensation. Instead of fighting over who caused the accident, each driver’s own insurer would pay their medical bills and lost wages up to a set limit, regardless of fault. The right to sue for pain and suffering was restricted to serious injuries that crossed a defined threshold.
The idea spread rapidly. By 1976, 26 states had adopted some version of no-fault insurance. The enthusiasm didn’t last. Several states later repealed their no-fault laws, finding that premiums hadn’t dropped as promised or that the restrictions on lawsuits were unpopular with voters. Today, about a dozen states maintain mandatory no-fault systems, including Florida, Michigan, New York, Kansas, Minnesota, and Utah. A few others, like Kentucky, New Jersey, and Pennsylvania, offer drivers a choice between no-fault and traditional tort-based coverage.3North Dakota Legislative Branch. No-Fault Insurance in Other States The no-fault story shows how auto insurance evolves through trial and error rather than following a single national blueprint.
Consumer Protections Built on Top
Mandatory insurance created a captive market, and some insurers took advantage. Through the mid-20th century, companies had wide discretion to set rates, deny claims with little explanation, and cancel policies with minimal notice. The backlash produced a wave of consumer protection measures that reshaped how insurers treat policyholders.
States began requiring insurers to act in good faith when handling claims, meaning they had to investigate promptly, communicate clearly about denials, and pay legitimate claims without unnecessary delay. Violations could expose an insurer to lawsuits for bad faith, and courts in many jurisdictions allowed punitive damages when insurers engaged in particularly egregious conduct. Most states also established formal dispute resolution channels. If your insurer denies a claim or underpays one, you can file a complaint with your state’s insurance department, which may offer nonbinding mediation to resolve the dispute without going to court.
Regulators also recognized that mandatory insurance laws alone couldn’t protect everyone, because some drivers still ignore the law and others carry only the bare minimum. Over 20 states now require drivers to carry uninsured motorist coverage, and many others require insurers to at least offer it. This coverage pays your medical bills and other losses when the person who hit you has no insurance or not enough.
How Insurers Price Risk Now
Early auto insurance premiums were based on a handful of factors: where you lived, what you drove, and your driving record. Modern insurers use far more data, and the shift has raised significant regulatory questions.
Most insurers now factor your credit history into your premium. They don’t use your raw credit score but rather a “credit-based insurance score” derived from your credit report, which they argue correlates with the likelihood of filing a claim. Federal law allows insurers to pull your credit report for underwriting purposes, and if your credit information leads to a higher premium, the insurer must notify you in writing and tell you which credit bureau supplied the data.4GovInfo. Fair Credit Reporting Act (15 USC 1681 et seq.) Federal law explicitly leaves room for states to impose their own restrictions, and several states have banned or limited the practice.5Federal Trade Commission. Fair Credit Reporting Act
The newest frontier is telematics: small devices or smartphone apps that track your actual driving behavior, including speed, braking patterns, time of day, and miles driven. By 2024, more than 21 million U.S. policyholders were sharing telematics data with their insurer, a figure that has grown at roughly 28 percent annually since 2018. Surveys show that about 60 percent of drivers offered a telematics program opt in, attracted by the prospect of lower premiums for safe driving habits. The regulatory response has been fragmented. Some states have introduced laws requiring driver consent before insurers can collect this data, while others have debated banning certain uses of telematics in underwriting entirely. Comprehensive national standards don’t yet exist.
What the Framework Is Still Absorbing
Two technologies are testing the limits of the system Loomis’s policy started.
The rise of Uber, Lyft, and similar platforms in the 2010s exposed a gap that traditional auto insurance was never designed to cover. Personal policies exclude commercial driving. Commercial policies are designed for full-time professional drivers. Rideshare drivers fall somewhere in between. Nearly all states and the District of Columbia have now enacted legislation creating a three-period insurance framework for transportation network companies, with the rideshare company picking up progressively higher levels of coverage once a driver has the app on, has accepted a ride, and has a passenger in the vehicle.6NAIC. Commercial Ride-Sharing Your personal auto policy will not cover you while you’re logged into a rideshare app, even if you haven’t accepted a ride yet.
Self-driving cars pose a deeper challenge. The system has always assumed a human driver whose negligence causes accidents. When the “driver” is software made by a manufacturer using components from multiple suppliers, the traditional framework starts to break down. Who is at fault when an algorithm misjudges a situation? The car owner? The software developer? The sensor manufacturer? No federal statute currently governs autonomous vehicle liability, and Congress has not passed binding rules that affirmatively allow fully autonomous vehicles on public roads. States have stepped into the void individually. More than two dozen have enacted some form of autonomous vehicle insurance requirement, with mandated coverage ranging from $1 million to $5 million depending on the state and whether the vehicle is operating commercially.
From a single handwritten policy in 1897, through the Massachusetts mandate in 1927, the state-based regulatory structure cemented in 1945, and the no-fault wave of the 1970s, car insurance has become a product that no one in Gilbert Loomis’s day could have recognized. The next chapter is being written now, in state capitols trying to decide how far the old framework can stretch to cover algorithms, apps, and the data they generate.