How Tesla’s Safety Score (Beta) is Calculated

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Image: Tesla

With the 2021.32.22 software update released earlier today, Tesla debuted its Safety Score (beta) system. A driver’s Safety Score is a numerical value assigned to them based on an assessment of their driving behavior.

Safety Score is essentially used to estimate the likelihood of an individual’s driving resulting in a future collision. The higher your Safety Score, the safer Tesla’s metrics have deemed your driving behavior.

Tesla will be using a 7-day aggregate of drivers’ Safety Scores to determine eligibility for its Full Self-Driving beta program, which started accepting public requests for enrollment with the 2021.32.22 software update.

Safety Score is calculated using metrics from Tesla’s Insurance Calculator, or as Tesla likes to call them, “the five safety factors”:

  • Forward Collision Warnings per 1,000 Miles
  • Hard Braking
  • Aggressive Turning
  • Unsafe Following
  • Forced Autopilot Disengagement

For an in-depth explanation of these metrics, see Tesla’s official support document for its Safety Score (beta).

To calculate a driver’s daily Safety Score, Tesla’s “five safety factors” are assigned numerical values based on data collected by sensors in the Tesla electric vehicle (EV) and its Autopilot software, and churned through the Predicted Collision Frequency (PCF) formula below to predict how many collisions may occur per 1 million miles driven:

Image: Tesla

The resulting PCF value is then converted into a daily Safety Score between 0 and 100 using the following formula:

Image: Tesla

Daily Safety Scores are aggregated (up to 30 days) into a mileage-weighted average to calculate a driver’s overall Safety Score — this is the score that will be displayed in the dedicated “Safety Score” tab that’s now available on the Tesla mobile app.

From the dedicated “Safety Score” tab on the Tesla mobile app, drivers can also simulate their Safety Score by adjusting any of “the five safety factors” to their liking and seeing how that will affect their aggregated Safety Score.

“Most drivers will have a Safety Score of 80 or above,” says Tesla. Your Safety Score is specific to a combination of you and the Tesla EV you’re driving — it is not transferred to anyone you sell the car to, and does not carry over to any other Tesla EVs you drive, own, or purchase in the future.

What’s your Tesla Safety Score so far?

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