California Is the Only State That Bans Telematics — AB 311 Wants to End That

California is the only state in the nation that does not currently allow the use of telematics in the auto insurance industry, and a new bill wants to change that.

A proposed measure working its way through Sacramento could give Golden State drivers a voluntary path to lower premiums, according to reporting by the San Diego Union-Tribune. The legislation, Assembly Bill 311, would let insurers use smartphone sensors, apps, or plug-in devices to measure driving behavior and reward safer drivers with discounts. The San Diego Union-Tribune analysis frames the reform as overdue, but not without real trade-offs. The Save Max Quote Index, drawn from 3.3 million+ real quote requests, consistently shows California among the most expensive states for personal auto coverage, making any credible path to discounts worth understanding.

California's Telematics Ban: Why Your State Is the Odd One Out

California stands alone. Every other state in the country permits insurers to use telematics data when setting auto insurance rates. California does not, and the reason traces back nearly four decades.

Proposition 103, passed by a narrow 51% of voters in 1988, placed strict regulations on the California insurance industry. That ballot measure was designed to rein in what voters saw as runaway premium increases, but its unintended consequence has been to freeze the industry in place technologically.

According to the San Diego Union-Tribune, Prop 103 "has also stifled technological innovation, including the use of telematics, leaving California's insurance industry decades out of date." In both the home and auto insurance markets, that regulatory straitjacket has limited how insurers can price risk and how consumers can earn savings.

The result is a market where California drivers cannot access the same usage-based pricing tools available to drivers in all 49 other states, regardless of how safely they actually drive.

What AB 311 Would Actually Change

Assembly Bill 311, written by Assemblymember Tina McKinnor, D-Inglewood, would open California to usage-based insurance for the first time since Prop 103 closed the door.

The mechanics are straightforward. Telematics refers to driving data recorded and transmitted through smartphone sensors and apps, or through a small device that plugs directly into a vehicle. That data can capture speed, acceleration, braking, phone use, location, and time of day, among other signals.

Critically, participation would be purely voluntary and revocable. Insurance companies could not require anyone to use a telematics program. Drivers who opt in and demonstrate safe habits could qualify for premium discounts. Drivers who decline simply continue under the existing pricing framework.

The bill also places explicit restrictions on how that data can be used. Insurers and third-party telematics providers would be prohibited from selling consumer data or using it for marketing purposes. Data use would be limited strictly to determining insurance rates.

This is a meaningful structural difference from many app-based data arrangements consumers already accept without much thought.

How Telematics Programs Work in the Other 49 States

Because the rest of the country has operated with telematics-based insurance for years, there is a clear picture of what California could expect. Drivers in those states typically encounter programs structured around a few common features.

For California auto insurance shoppers, this framework would represent a genuinely new option. States like Oregon and Washington already operate under telematics-permissive rules, giving drivers in those markets access to behavioral discounts that California residents currently cannot access regardless of how carefully they drive.

The SMQI regularly captures quote data from drivers in neighboring states, reinforcing that usage-based programs have become a standard feature of the competitive insurance landscape everywhere but California.

The Evidence on Safer Driving and Lower Premiums

The case for AB 311 rests on two separate arguments: that telematics can save drivers money and that it may make roads safer. The evidence on both is suggestive but carries caveats worth noting.

On the safety side, one study cited by the San Diego Union-Tribune found that participation in telematics programs resulted in significant reductions in speeding, distracted driving, and hard braking. A second study found a 15% to 21% decrease in handheld phone use while driving.

The caveats matter here.

The first study was conducted by telematics service provider Cambridge Mobile Telematics. The second was backed by the insurance industry. Neither finding is worthless, but neither is independent academic research either.

As the source notes, "the academic literature is not quite as settled and more research needs to be done." What the available evidence does suggest is that telematics holds genuine promise for improving driving behavior, particularly when drivers receive real-time feedback and engagement with the program is high.

"The academic literature is not quite as settled and more research needs to be done, [but] nonetheless suggests that the use of telematics holds some promise for improving driving behavior, particularly when feedback is provided to drivers and engagement is high."

For consumers, this means treating telematics discount programs as a plausible savings tool, not a guaranteed one.

The Privacy Trade-Off: What the Bill Gets Right and Wrong

This is where AB 311 gets complicated, and where thoughtful consumers should read carefully before opting in.

The bill's privacy protections have real substance. Insurers cannot sell your data. Telematics providers cannot use it for marketing. Government entities face explicit restrictions on collecting or retaining identifiable trip-level data, precise geolocation data, or linked origin-and-destination records.

But critics have identified two significant gaps.

First, insurers cannot be held liable for the improper use of data by third-party telematics providers unless it can be proven that they knew about the abuse and allowed it to continue. That is a high bar for consumers to clear.

Second, the deidentification requirement may not protect privacy as effectively as it sounds. A coalition of consumer and privacy organizations warned:

"Behavioral and location data cannot be meaningfully anonymized. Telematics data, which captures daily driving patterns between home, work, school and other regular destinations, creates a behavioral fingerprint that survives the removal of direct identifiers."

A Consumer Reports analysis, cited in the source, echoed this: deidentified data "can later be matched with other commercially available data about you and 're-identified.'"

The source's conclusion is pragmatic rather than dismissive. People already trade digital privacy for financial benefits through fitness trackers, apps, and websites. There is no visible uproar over telematics in the 49 states where it already operates. But California consumers should enter any opt-in decision with eyes open.

What this means for you

If AB 311 passes, shop your California auto insurance options actively before enrolling in any telematics program. Ask each insurer exactly which third-party provider will handle your data, what specific data points are collected, how discounts are calculated, and what happens to your stored data if you later revoke consent. Compare quotes both with and without telematics enrollment before committing, because the discount benefit needs to outweigh the privacy cost for your specific situation. Use the Save Max Quote Index as a baseline to benchmark whether any telematics discount you are offered actually delivers meaningful savings relative to the broader California market.

What Happens Next: AB 311's Path Through the Legislature

As of the source article's publication, AB 311 remains under consideration in the California state Legislature. The bill has been referred to the Senate Privacy, Digital Technologies, and Consumer Protection Committee, which has already reviewed a legislative analysis that includes the privacy coalition's warning about re-identification risk.

That committee review is a meaningful hurdle. Privacy concerns carry substantial weight in California's legislative culture, and the bill's vague enforcement language around third-party provider liability is precisely the kind of issue that can stall or amend legislation at this stage.

Assemblymember Tina McKinnor, D-Inglewood, authored the bill. The opposition includes consumer and privacy advocacy organizations who argue the privacy protections are structurally insufficient.

For drivers watching this closely, the key question is whether the Legislature amends the bill to tighten third-party liability provisions and strengthen deidentification standards before a final vote. A strengthened version of the bill would address the most legitimate objections. A version that passes as written would leave some meaningful privacy gaps in place even as it opens a new avenue for premium savings.

Drivers in states like Texas and Florida have navigated these trade-offs for years in active telematics markets. California would simply be catching up.

FAQ

About Kyle Greenwood

Kyle Greenwood is a Writer and Researcher at Save Max Auto with a decade of consumer-content experience. He specializes in explainers, longer-form features, and Q&A guides on the topics auto drivers actually search for. Read more from Kyle Greenwood →

Edited by Brooke Grissom.

Methodology

This article is grounded in the source linked above. Save Max Auto data points referenced here are drawn from the Save Max Quote Index (SMQI), a proprietary instrument reflecting 3,364,317 real consumer quote requests submitted to savemaxauto.com. State and carrier rankings reflect the lifetime dataset; year-over-year shifts reflect a rolling 12-month window. The index is refreshed monthly. External authority figures referenced (NAIC, NHTSA, state regulators) reflect the most recent public data releases available at time of writing.

Sources

• Primary source: San Diego Union-Tribune, "Opinion: A California car insurance reform that actually makes sense"