If you were riding in an Uber or Lyft and got hit by an uninsured or underinsured driver in 2026, you may have just discovered that the rideshare company’s UM/UIM coverage dropped from $1,000,000 to $60,000 per person — a 94% cut triggered by California’s SB 371, effective January 1, 2026. For seriously injured passengers, $60,000 barely covers a single emergency room visit, let alone months of rehabilitation. What most injured passengers don’t know is that their own personal auto insurance policy likely contains a lifeline: personal UM UIM stacking rideshare SB 371 strategy that can layer your personal coverage on top of exhausted TNC limits. This guide walks you through every step of activating that coverage — from confirming app status at the time of the crash to sending a legally compliant written demand.
What SB 371 Actually Changed — and Why It Creates a Coverage Gap
Before January 1, 2026, Transportation Network Companies (TNCs) like Uber and Lyft were required to carry $1,000,000 in uninsured/underinsured motorist coverage during active ride periods. SB 371 restructured those limits dramatically. For crashes caused by uninsured or underinsured third-party drivers — meaning the at-fault driver is neither you nor the TNC — the new UM/UIM cap is $60,000 per person and $300,000 per accident under California Insurance Code Sections 32-1, 32-7, 34-3, 34-4, 40-7, and 42-5. Crucially, liability coverage for the TNC’s own negligence remains at $1,000,000 under Sections 34-1 and 36-15 — the cut only applies when a third-party uninsured driver causes the crash.
This distinction matters enormously. If a drunk driver runs a red light and T-bones your Lyft, the TNC’s UM/UIM policy — not its liability policy — is what responds. And under SB 371, that response is now capped at $60,000. For victims with fractures, spinal injuries, or traumatic brain injuries, that number is functionally inadequate — a point underscored by a $12 million San Francisco verdict in 2026 against Lyft after a driver ran a red light and caused a traumatic brain injury to a passenger. Using a brain injury calculator to estimate TBI damages alone often produces figures five to ten times that UM/UIM cap, which is precisely why understanding the stacking strategy is critical in 2026.
It is also worth noting that California’s minimum motor vehicle liability limits increased in 2026 to $30,000 per person, $60,000 per accident, and $15,000 for property damage — meaning even at-fault drivers carrying only minimum coverage now offer slightly more than before, though still far short of what serious injuries demand. A June 2026 agreement between Uber and the Consumer Attorneys of California (CAOC) maintained the reduced UM/UIM coverage levels established by SB 371 but included commitments from Uber to improve data transparency, claims handling, and safety measures — developments riders and their attorneys should monitor closely when negotiating claims.
Understanding UM/UIM Stacking: How Personal Coverage Becomes Your Safety Net
What “Stacking” Means in a Rideshare Context
Stacking refers to the ability to combine — or “stack” — coverage limits from multiple insurance policies when a single policy’s limits are exhausted. In a post-SB 371 rideshare claim, the sequence works like this: (1) the at-fault uninsured driver has zero coverage; (2) the TNC’s UM/UIM policy pays up to $60,000; (3) if that amount is insufficient, your personal auto insurance UM/UIM policy activates as excess coverage. This is confirmed by standard policy language that extends personal UM/UIM protection to insureds injured as passengers in vehicles other than their own — a provision documented across most personal auto policies and consistent with California’s strong public policy favoring UM/UIM coverage for accident victims.
The real-world stakes of getting this right are significant. In 2026, typical rideshare injury settlements range from $25,000 to $500,000 for bodily injury cases, depending on severity, liability clarity, and available coverage layers. Sexual-assault claims against rideshare companies average $400,000 nationally. A $25 million Los Angeles verdict against Uber for the wrongful death of a passenger killed by a distracted driver, and a $19 million New Jersey verdict in January 2026 — where a jury found the Uber driver was the company’s agent, piercing the independent-contractor classification and ending a passenger’s career — illustrate just how much value can be at stake when full coverage is pursued aggressively. Stacking your personal UM/UIM coverage is frequently the difference between a partial recovery and one that actually reflects the full scope of your losses.
The Coverage Gap in Numbers
Consider a passenger who sustains a spinal fracture and requires surgery after an uninsured driver rear-ends their Uber. Medical bills alone may reach $200,000 or more before accounting for lost wages, future care, or pain and suffering. Under pre-SB 371 rules, the TNC’s $1,000,000 UM/UIM policy would have been more than sufficient to cover those losses. Under the 2026 framework, the TNC pays $60,000 — leaving $140,000 or more in medical expenses alone unaddressed, to say nothing of non-economic damages. If that same passenger carries a personal auto policy with $250,000 in UM/UIM coverage, stacking could close most or all of that gap. Without understanding and activating the stacking strategy, that $250,000 in personal coverage sits unused.
Why Exhaustion Is the Legal Trigger for Stacking
Personal UM/UIM policies are written as excess coverage in rideshare scenarios — they activate only after the primary coverage source (the TNC’s UM/UIM policy) has been exhausted. “Exhaustion” in insurance terms does not mean waiting for a lengthy litigation process; it means obtaining written confirmation from the TNC’s insurer that the $60,000 limit has been tendered or will be tendered in full. Until that confirmation exists in writing, most personal carriers will refuse to open a UM/UIM claim file or engage in any substantive evaluation of your damages. This makes exhaustion documentation the single most important procedural step in the stacking process.
Step 1 — Confirm the App Status at the Moment of Impact
Everything in a rideshare UM/UIM claim depends on what the Uber or Lyft app was doing at the exact moment of the crash. California law and TNC insurance policies divide driver activity into three periods, each carrying different coverage implications:
- Period 0 (App Off): The driver’s personal auto insurance is the only coverage available. TNC insurance does not apply at all. If the at-fault driver was in Period 0, you are dealing with a standard UM/UIM claim against your own personal policy only.
- Period 1 (App On, No Ride Accepted): The TNC provides limited liability coverage — typically $50,000 per person/$100,000 per accident — but UM/UIM coverage in this period is more limited and varies by carrier. SB 371’s $60,000 UM/UIM cap applies most clearly during Periods 2 and 3.
- Period 2 (Ride Accepted, En Route to Pickup): Full TNC coverage activates, including the $60,000 UM/UIM cap under SB 371.
- Period 3 (Passenger in Vehicle): Same full TNC coverage as Period 2, with the $60,000 UM/UIM cap for third-party uninsured drivers.
To confirm the app status, request the TNC’s trip data through a formal preservation demand sent within the first week after the crash. Both Uber and Lyft maintain GPS and app-status logs tied to each trip. These records can be subpoenaed if not voluntarily produced. Your attorney can also submit a California Public Records Act request if law enforcement obtained app data as part of an accident investigation. Do not rely on the TNC’s verbal or informal confirmation of app status — get it in writing, with timestamps.
Step 2 — Exhaust TNC UM/UIM Coverage First (and Document Exhaustion)
How to Formally Exhaust TNC Coverage
Formal exhaustion requires a written tender of the TNC’s UM/UIM policy limits. The process typically follows this sequence:
- Open a UM/UIM claim directly with the TNC’s insurer. In 2026, Uber’s primary insurer is James River Insurance Company for Period 1 and various carriers for Periods 2 and 3; Lyft uses similar layered arrangements. Your attorney can identify the correct carrier by reviewing the police report (which should list the TNC’s insurer) or by sending a written coverage inquiry to the TNC directly.
- Submit a documented demand package. This should include all medical records and bills to date, imaging results, treating physician narratives, lost wage documentation, and a damages summary. The package signals to the TNC’s insurer that your damages exceed the $60,000 cap and creates a paper trail supporting exhaustion.
- Obtain written confirmation of tender. Once the TNC’s insurer agrees to pay the $60,000 limit, request a formal tender letter on company letterhead confirming the amount, the policy number, and the fact that this represents the full UM/UIM limit available. This letter is the exhaustion document your personal carrier will require.
- Preserve all correspondence. Keep every email, letter, and claim acknowledgment from the TNC’s insurer. If the insurer disputes coverage or delays, those communications become evidence of bad faith — a separate cause of action under California law.
Note that the June 2026 Uber-CAOC agreement includes commitments to improve claims handling and data transparency. In practice, this means Uber’s insurer should be more responsive to documentation requests and coverage inquiries than in prior years — but do not assume cooperation. Send all requests in writing, via certified mail or email with read receipts, and follow up in writing if you do not receive a response within 15 days.
Step 3 — Review Your Personal Policy Before Making Any Demand
Before you contact your personal auto insurer, you need to understand exactly what your policy says about UM/UIM coverage in three specific areas: (1) the definition of “insured,” (2) the other-insurance clause, and (3) any anti-stacking provisions.
Definition of “Insured”: Most personal auto policies define “insured” broadly to include the named insured and household family members while occupying any motor vehicle. If you were a passenger in an Uber or Lyft, you were “occupying” a motor vehicle at the time of the crash, which means you likely qualify as a covered insured under your personal policy even though you were not in your own car.
Other-Insurance Clause: This provision determines whether your personal policy pays as primary or excess coverage when another policy also applies. In rideshare scenarios, the TNC’s UM/UIM policy is primary; your personal policy is excess. The other-insurance clause should confirm this hierarchy. If the clause is ambiguous, California courts generally resolve the ambiguity in favor of the insured — meaning in favor of coverage.
Anti-Stacking Provisions: Some policies include language purporting to prohibit stacking of UM/UIM coverage across multiple vehicles or policies. California courts have frequently found such provisions unenforceable when they reduce coverage below the statutory minimum or when they conflict with the public policy underlying Insurance Code Section 11580.2. If your policy contains an anti-stacking clause, do not assume it forecloses your claim — have an attorney evaluate its enforceability before abandoning the strategy.
Step 4 — Navigate the Consent-to-Settle Trap
What is the consent-to-settle trap and how do I avoid it?
The consent-to-settle trap is one of the most dangerous procedural pitfalls in a stacked UM/UIM claim. Here is how it works: before you accept any settlement from the TNC or the at-fault driver’s insurer, your personal UM/UIM carrier has the right to be notified and, in some cases, to withhold consent. If you settle without that consent, your personal carrier may deny your subsequent UM/UIM claim on the grounds that the unauthorized settlement prejudiced its subrogation rights — its right to recover money from the at-fault party after paying you.
California Insurance Code Section 11580.2(h) requires UM/UIM insurers to consent to settlement before the insured resolves a claim with the at-fault party. The practical steps to avoid the trap are:
- Notify your personal UM/UIM carrier in writing before accepting any settlement. Send a letter explaining that you are about to accept the TNC’s $60,000 UM/UIM tender and requesting written consent to do so.
- Give the carrier the opportunity to substitute payment. Under California law, if your personal carrier does not want you to settle with the at-fault party’s insurer, it can preserve its subrogation rights by paying you the settlement amount itself. If it fails to act within the statutory period, it waives its objection.
- Document all consent communications. Keep every letter and email related to the consent process. If your personal carrier unreasonably withholds consent or fails to respond, those communications support a bad-faith claim.
Step 5 — Send a Compliant Written Demand to Your Personal UM/UIM Carrier
What Your Demand Letter Must Include
Once exhaustion is documented and consent is obtained, you are ready to make a formal UM/UIM demand to your personal carrier. A legally compliant demand letter should include the following elements:
- Full identification of all parties: your name and policy number, the at-fault driver’s name and insurer (if any), the TNC and its insurer, and the date and location of the crash.
- A clear statement that the TNC’s UM/UIM policy has been exhausted, with the exhaustion letter attached as an exhibit.
- A complete damages summary: itemized medical bills, lost wage calculations, future care cost projections (supported by a life care plan if available), and a narrative of pain, suffering, and life impact.
- A specific dollar demand that reflects your full damages, not merely the gap between the TNC’s $60,000 payment and your personal policy limit.
- A reasonable response deadline — typically 30 days — with a statement that failure to respond may constitute bad faith under California Insurance Code Section 790.03.
- A copy of the police report, all medical records and bills referenced in the demand, and any expert reports or vocational evaluations supporting your damages claim.
Sample Demand Language
The following is illustrative sample language for the core coverage section of your demand letter. It should be adapted by your attorney to reflect the specific facts of your claim:
“On [date of crash], our client [Name] sustained serious injuries while a passenger in a [TNC] vehicle operating in Period [2/3] under the applicable TNC insurance framework. The at-fault driver, [Name], was uninsured/underinsured at the time of the collision. [TNC]’s UM/UIM insurer, [Insurer Name], has tendered its policy limit of $60,000 per person, as confirmed by the attached exhaustion letter dated [date]. Our client’s damages, detailed herein, substantially exceed that amount. Pursuant to [Your Insurer] Policy No. [XXXXXX], our client is entitled to recover the difference between the TNC’s exhausted UM/UIM limits and the full value of her damages, up to your policy’s UM/UIM limit of $[amount]. We hereby demand payment of $[specific amount] within 30 days of this letter. Failure to respond or to tender a reasonable offer within that period may subject [Your Insurer] to liability for bad faith under California Insurance Code Section 790.03 and Brandt v. Superior Court.”
How Stacking Affects Your Final Settlement Value
How much can I realistically recover by stacking personal UM/UIM after SB 371?
The honest answer depends on three variables: the severity of your injuries, the UM/UIM limits on your personal policy, and the strength of your documentation. In 2026, typical rideshare injury settlements range from $25,000 to $500,000 for bodily injury cases. Cases involving catastrophic injuries — spinal cord damage, traumatic brain injury, permanent disability — regularly exceed that range when liability is clear and coverage is fully stacked.
Consider a concrete example. A passenger suffers a traumatic brain injury when an uninsured driver runs a red light into their Lyft. Total documented damages — past and future medical costs, lost earnings, pain and suffering — are calculated at $350,000. Without stacking, the passenger recovers $60,000 from the TNC’s UM/UIM policy and nothing more, leaving $290,000 uncompensated. With a personal auto policy carrying $300,000 in UM/UIM coverage and successful stacking, the passenger recovers $60,000 from the TNC and up to $290,000 from the personal policy — a near-complete recovery. The $12 million San Francisco verdict in 2026 involving a Lyft driver who ran a red light and caused a TBI illustrates the upper ceiling of what litigation can produce in severe cases, though most claims resolve through negotiation rather than trial.
Sexual-assault claims against rideshare companies present a different damages profile. Nationally, these claims average $400,000, and they typically proceed against the TNC’s liability coverage — not UM/UIM — given that the driver is the at-fault party. If you are pursuing a sexual-assault claim, the stacking strategy described in this guide does not apply in the same way, but the broader principle of identifying every available coverage layer remains equally important.
The $19 million New Jersey verdict from January 2026 — where a jury found an Uber driver was the company’s agent rather than an independent contractor — is a reminder that the independent-contractor classification is not impenetrable. In cases where the TNC’s own conduct or its driver’s negligence caused the crash, the liability policy’s $1,000,000 limit (not the reduced UM/UIM cap) is what matters, and aggressive litigation over classification can dramatically expand recovery.
Frequently Asked Questions
Does SB 371 affect my personal auto insurance policy directly?
No. SB 371 applies only to the UM/UIM coverage that TNCs are required to carry. It does not alter the terms of your personal auto insurance policy, reduce your personal UM/UIM limits, or change the rules governing when your personal policy activates as excess coverage. Your personal policy remains governed by its own terms and by California Insurance Code Section 11580.2, which mandates minimum UM/UIM coverage on all personal auto policies and establishes strong consumer protections for policyholders pursuing UM/UIM claims.
What if I don’t own a car? Can I still stack UM/UIM coverage?
Potentially yes, through two avenues. First, if you are a resident of a household where another family member owns a vehicle and carries auto insurance, you may qualify as a covered insured under that policy — check the definition of “insured” in the applicable policy. Second, some non-owner auto insurance policies include UM/UIM coverage that follows the named insured regardless of what vehicle they are occupying. If you purchased non-owner coverage, review your policy carefully. If neither option applies, you may be limited to the TNC’s $60,000 UM/UIM cap — which is precisely why carrying personal UM/UIM coverage, even without a vehicle, is a meaningful financial protection in 2026.
How does app status affect my ability to stack personal UM/UIM?
App status determines which TNC insurance layer is primary. If the app was off at the time of the crash (Period 0), no TNC UM/UIM coverage applies, and your personal policy would be the only UM/UIM source available. In that scenario, stacking in the traditional sense does not apply — your personal policy is primary and the only layer. If the app was on and a ride was active (Periods 2 or 3), the TNC’s $60,000 UM/UIM policy is primary, and your personal policy stacks as excess after exhaustion. Period 1 presents a more complex analysis that requires careful review of both the TNC’s policy language and your personal policy’s other-insurance clause.
Regardless of app status, confirming the exact period through documented trip data is essential before making any coverage argument. An incorrect assumption about app status can undermine your entire claim strategy, either by triggering the wrong coverage layer or by providing the TNC’s insurer with grounds to dispute coverage altogether.
Jennifer Torres is a Rideshare Accident Claims Researcher with extensive knowledge of personal injury law and settlement values across the United States. With years of experience analyzing rideshare accident claims only (high value) cases, Jennifer helps injury victims understand their legal rights and the potential value of their claims. Jennifer is not an attorney and the information provided is for educational purposes only.