The crash is bad enough on its own. Then the police officer hands you the other driver’s information, runs the plate, and tells you the policy lapsed three months ago. Or the insurance card is current, but the coverage turns out to be $15,000, and you are already past that in ER bills alone. New Jersey law gives you options when the at-fault driver cannot or will not pay, but the rules around uninsured and underinsured motorist coverage are written in a way that benefits the carrier, not the policyholder. At The Law Offices of Anthony Carbone, we have walked Hudson County drivers through this process for decades, and the pattern is consistent: clients who understand their own UM/UIM coverage recover more than clients who assume the at-fault driver’s policy is their only path.
Here is how the alternative coverage actually works.
The Two Types of Coverage That Step In
New Jersey policies include two related but distinct coverages, both required by statute under N.J.S.A. 17:28-1.1:
- Uninsured Motorist (UM) coverage applies when the at-fault driver has no insurance, cannot be identified (hit and run), or is driving a stolen vehicle
- Underinsured Motorist (UIM) coverage applies when the at-fault driver has insurance, but the policy limits are too low to cover your damages
Both coverages pay for bodily injury, including pain and suffering, lost wages beyond PIP limits, and future medical care. They sit on top of your PIP medical benefits rather than replacing them.
The minimum UM/UIM limit in New Jersey is $15,000 per person and $30,000 per accident. Drivers can purchase up to their own liability limit, which for most policies tops out at $250,000 or $500,000 per person. Buying higher limits costs surprisingly little, often $30 to $80 more per year, because the carrier is rarely on the hook unless the other driver had nothing.
When UM Coverage Kicks In
Three scenarios commonly trigger UM coverage in Jersey City and across Hudson County:
A driver with no policy at all. New Jersey requires insurance, but enforcement is imperfect, and uninsured drivers represent roughly 14 percent of motorists in some estimates. The Garden State has a higher uninsured rate than several neighboring states.
A hit and run. If another vehicle strikes you and leaves the scene, UM coverage treats the phantom driver as uninsured. You will need to report the crash to police within 24 hours and to your carrier promptly. Some policies require physical contact between vehicles, which becomes a fighting point when an evasive maneuver causes a single-car crash.
A stolen vehicle or excluded driver. If the at-fault car was being driven without permission or by someone the policy specifically excludes, the liability carrier denies coverage and UM steps in.
What Happens After a Hit and Run
The first 48 hours matter. File a police report, photograph any paint transfer or debris, and locate witnesses. UM claims based on hit and runs face additional scrutiny because there is no opposing driver to depose. Carriers sometimes deny the claim outright, arguing that the crash was a single-vehicle event. Preserving witness contact information and surveillance footage from nearby businesses can make or break the case.
How UIM Works When the Other Policy Is Too Small
Underinsured motorist coverage is where most of the disputes happen in practice. The math is specific to New Jersey and trips up people who think the two policies just stack on top of each other.
UIM is calculated as the difference between the at-fault driver’s liability limit and your own UIM limit. If the at-fault driver has $25,000 in liability coverage and you carry $100,000 in UIM, your available UIM is $75,000, not $100,000 on top of the $25,000. This is sometimes called the “step-down” approach, and it is why carrying UIM lower than the standard liability limits in your area leaves you exposed.
A common Hudson County scenario looks like this. The at-fault driver carries the state minimum of $15,000. Your damages, including a herniated disc requiring injections and six months of lost income, come to $120,000. You collect the $15,000 from the at-fault carrier, then file a UIM claim against your own policy. If your UIM limit is $100,000, you can pursue an additional $85,000 from your own insurer.
The Consent to Settle Requirement
Before you accept any settlement from the at-fault driver’s insurance, you must notify your own UIM carrier in writing and obtain consent. This requirement comes from Longworth v. Van Houten and Rutgers Casualty v. Vassas. Settling without consent can forfeit your UIM rights entirely. The carrier has a short window, typically 30 days, to either approve the settlement or substitute its own check for the same amount and preserve a subrogation claim against the at-fault driver.
Missing this step is one of the most expensive mistakes an unrepresented claimant can make.
Why UM/UIM Claims Are Adversarial Even Against Your Own Carrier
People expect their own insurance company to be on their side. UM and UIM claims do not work that way. Once you make a claim against your own UM or UIM coverage, the carrier steps into the shoes of the at-fault driver and defends the case as if it were the negligent party. Adjusters dispute liability, question the extent of injuries, hire defense medical examiners, and offer policy-limits demands a fraction of what the case is actually worth.
The claim ultimately goes to arbitration in most cases. Both sides select an arbitrator, a neutral is appointed, and a hearing is held. The arbitration award can be binding or non-binding depending on policy language, and the difference matters when evaluating settlement leverage.
How The Law Offices of Anthony Carbone Approaches UM/UIM Cases
The firm’s process starts with pulling your full declarations page and any endorsements to identify the actual UM/UIM limits, including any household stacking opportunities under New Jersey’s intra-policy and inter-policy stacking rules. Resident relatives sometimes have their own UM/UIM coverage that applies, and those layers add up.
From there, the work includes:
- Issuing timely Longworth notice to preserve your right to the at-fault settlement
- Documenting damages with the same rigor as a third-party liability case
- Preparing for UIM arbitration with medical experts, vocational specialists, and treating physicians
- Negotiating health insurance and Medicare liens before disbursement
The firm’s pages on auto accident cases and recent blog coverage provide additional background on related coverage issues. The New Jersey Department of Banking and Insurance also publishes consumer information on UM/UIM coverage worth reviewing before your next renewal.
A driver with no insurance or a $15,000 policy does not end the case. Your own coverage, the household’s stacked policies, and the procedural rules around consent and arbitration determine how much you ultimately recover. The Law Offices of Anthony Carbone offers a free consultation to evaluate your coverage, calculate your real UIM exposure, and protect your claim from the procedural traps that quietly cost people their compensation. Call 201-963-6000 before you sign anything or accept any check from the at-fault carrier.
