A serious crash can feel overwhelming even before the insurance questions start. Then comes another layer of stress: the other driver was at fault, but their policy limits may be far too low for the injuries, lost income, vehicle damage, and long-term treatment involved.
That situation is more common than many people realize. According to the National Highway Traffic Safety Administration, 39,254 people died in traffic crashes in 2024, and many more suffered nonfatal injuries requiring expensive medical care. At the same time, state minimum liability limits often remain relatively modest compared with the real cost of a major injury claim. For example, California’s private-passenger minimum limits are now $30,000/$60,000/$15,000, while Texas still lists $30,000/$60,000/$25,000 as its current minimum liability limits.
When medical bills, wage loss, and pain-related damages rise beyond those limits, injured drivers often begin asking the same urgent questions. In this post you’ll learn the answers to 10 of the most common ones, how uninsured and underinsured motorist coverage often fits into the picture, and why many people in this position start looking for an attorney with documented experience handling highly-similar insurance disputes.
If you want a broader primer on how this type of coverage works, our guide on how UM and UIM coverage works after a serious crash offers a useful starting point.
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Many drivers assume that if the other person caused the crash, that driver’s insurance will fully cover the loss. In practice, auto insurance is limited by policy amounts, exclusions, notice rules, and state-specific statutes. The National Association of Insurance Commissioners explains that auto policies commonly include liability, medical payments, uninsured/underinsured motorist coverage, and physical damage coverage, each with separate terms and limits.
That matters because state minimums are often not designed around catastrophic injuries. The NAIC’s consumer guide to auto insurance notes that state law sets minimum liability coverage amounts, but those minimums can be too low to fully cover a serious loss. In other words, being “insured” and being “insured enough” are very different things.
In general terms, it means the at-fault driver has liability insurance, but the available limits may not cover the full value of your damages.
The Insurance Information Institute describes underinsured motorist protection as coverage that may apply when an at-fault driver has liability insurance, but the policy limits do not cover the full extent of the loss. Depending on the state and the policy wording, that gap can affect bodily injury damages, property losses, or both.
This issue tends to show up when there are:
A simple example: if the at-fault driver carries $30,000 in bodily injury coverage and your crash-related damages are substantially higher, the claim may become an underinsured motorist situation.