Hit by an uninsured or underinsured driver

How the law usually works

Most places require drivers to carry at least some liability insurance. That insurance normally pays for injury or property damage the insured driver causes. An uninsured driver has no usable liability policy; an underinsured driver has insurance, but the policy limit is too low to cover the loss.

Your possible sources of compensation commonly include:

• Your own insurance: Uninsured-motorist (UM) or underinsured-motorist (UIM) coverage may pay some injury losses and, in some places, vehicle damage.
• Personal injury protection or no-fault benefits: These may pay medical expenses or lost income regardless of who caused the crash, subject to policy and legal limits.
• A compensation scheme: Some countries have organizations or statutory funds for crashes involving uninsured or unidentified drivers.
• The other driver: You may have a claim directly against the driver, but collecting can be difficult if that person has little money or property.

Fault still matters for many claims. Evidence may show which driver caused the collision, whether you contributed to it, and the amount of your losses. In some jurisdictions, a person partly at fault may receive reduced compensation or may be barred from recovering if their share of fault is sufficiently high.

An insurer may require prompt notice, a police report, medical examinations, proof of expenses, and cooperation with its investigation. An underinsured-motorist claim often involves first identifying the other driver’s policy limit, obtaining payment up to that limit, and then seeking the remaining covered loss under your own policy. Your policy may require the insurer’s consent before you settle with the other driver or release that driver from liability.

Common processes

1. Make the scene safe and obtain emergency help. People commonly move to a safe place if possible, call emergency services for injuries or danger, and follow medical advice. A medical record can also document injuries that were not obvious immediately.

1. Exchange and record information. Commonly collected details include names, addresses, telephone numbers, vehicle registration numbers, driver’s licence information, insurer and policy details, and the names of witnesses. Photos may show vehicle positions, damage, road conditions, signs, and visible injuries.

1. Report the crash. People commonly report the collision to police or the relevant traffic authority when required, particularly where there are injuries, major damage, a hit-and-run, or suspected lack of insurance. A report can help establish what happened, but it is not always a final decision about fault.

1. Notify your own insurer quickly. Notification usually opens a claim and allows the insurer to investigate. People commonly describe the facts accurately without guessing about fault, provide the police report number, and ask what coverage applies. Late notice can create disputes, although the effect depends on the policy and local law.

1. Check all potentially relevant coverage. This may include collision or comprehensive vehicle coverage, UM/UIM coverage, medical-payments or personal-injury-protection coverage, household policies, and coverage available through an employer or another vehicle. Coverage for passengers can depend on whose policy covers the vehicle and the injured person.

1. Document the losses. Common records include medical bills, prescriptions, rehabilitation expenses, wage records, repair estimates, towing and storage charges, photographs, and a record of symptoms and missed work. Keeping originals and a dated loss summary can make the claim easier to evaluate.

1. Determine whether the other driver is insured. Insurers or a compensation body may investigate whether the policy was valid on the crash date. If the driver cannot be identified, special rules often apply to “untraced” or hit-and-run claims.

1. Resolve or challenge the claim. People commonly negotiate with the insurer, use an internal complaint process, request review by an ombudsman or regulator, or bring a court or tribunal claim. A settlement document may permanently release some or all claims, so its wording matters.

Deadlines and time limits

Deadlines vary substantially by location, claim type, policy wording, and whether the claimant is a child or lacks legal capacity. Sources commonly provide ranges such as:

• Notice to an insurer: often promptly or within a reasonable period, sometimes a stated number of days.
• Notice to a government compensation body: sometimes within weeks or months, especially for uninsured or unidentified drivers.
• Personal-injury court claims: commonly around two to three years, although shorter or longer rules may apply.
• Vehicle-damage or contract claims: commonly around two to six years, depending on the jurisdiction and legal basis.

The time may run from the crash, discovery of the injury, the end of treatment, or another legally specified event. Confirm the applicable deadline with the court, compensation body, insurer, or a licensed attorney where you live. Do not assume that ongoing settlement discussions stop a limitation period.

Documents that usually matter

• Police or traffic collision report
• Insurance policies, declarations pages, and claim correspondence
• The other driver’s identification and insurance information
• Photographs, video, dashcam footage, and witness contacts
• Medical records, bills, prescriptions, and treatment notes
• Wage, employment, tax, or self-employment records
• Vehicle repair estimates, valuation evidence, towing and storage invoices
• A written account of the crash and symptom timeline
• Settlement offers, releases, and correspondence with insurers or compensation bodies

How it differs by jurisdiction

United States: There is no single nationwide UM/UIM rule. Each state regulates automobile insurance. UM/UIM coverage may be mandatory, optional, or subject to a permitted written rejection, and rules differ on injury, property damage, stacking policies, hit-and-run claims, and arbitration. No-fault states may require personal-injury-protection benefits while limiting when an injury claim against the other driver can be brought. State limitation periods and notice rules also differ.

England and Wales: The Road Traffic Act 1988 generally requires compulsory third-party motor insurance. The Motor Insurers’ Bureau (MIB) handles claims under arrangements for uninsured and untraced drivers, subject to its eligibility rules and procedures. Compensation for vehicle damage, personal injury, and a hit-and-run can follow different processes. The Limitation Act 1980 commonly provides a three-year period for many personal-injury claims, but exceptions and special rules apply.

Canada: Insurance is regulated mainly by the provinces and territories. Provinces commonly provide some uninsured-automobile protection and may have direct-compensation-for-property-damage systems, accident benefits, or no-fault schemes. Ontario, British Columbia, Alberta, Quebec, and other provinces use different terminology, procedures, coverage limits, and limitation rules. The applicable province is usually the one connected to the policy, vehicle, crash, or claimant.

Australia: Compulsory third-party (CTP) insurance generally focuses on personal injury, not damage to the vehicle or other property. Each state and territory has its own CTP and motor-accident legislation, claims authority, time limits, and rules for uninsured or unidentified vehicles. Property damage is often pursued through optional comprehensive or third-party property insurance, or directly against the responsible driver. The governing state or territory is important.

When people consult a lawyer

Legal advice is particularly useful when:

• Someone suffered a serious, permanent, or fatal injury.
• Fault is disputed or you may share responsibility.
• The driver fled, gave false insurance information, or may have been uninsured.
• The insurer denies coverage, delays payment, or says notice was late.
• Your losses may exceed the other driver’s policy limit.
• You are asked to sign a release or settlement.
• A limitation deadline is approaching.
• A child, dependent, or person unable to manage their affairs is involved.
• The crash occurred across state, provincial, territorial, or national borders.