Safety Score Beta

Safety Score Beta assesses driving behavior of Tesla vehicles based on several metrics called Safety Factors. These are combined to estimate the likelihood that driving behavior could result in a future collision. We combine your daily Safety Scores (up to 30 days) to calculate the aggregated Safety Score, displayed on the main ‘Safety Score’ screen of the Tesla app. You can find details around your daily Safety Score by selecting ‘Daily Details’ at the bottom of the screen.

Safety Score Beta is intended to provide drivers transparency and feedback of their driving behaviors to encourage safer driving and potentially pay less for their insurance. Safety Scores are a value between 0 and 100, where a higher score indicates safer driving. Most drivers are expected to have a Safety Score of 80 or above.

To see more details about Safety Scores and how they’re calculated, you need to determine if you are currently enrolled in version 2.1version 2.0 or a previous version. To determine which version you are enrolled in, open the Tesla app and scroll to the bottom of the ‘Safety Score’ screen.

What Changed in Version 2.1

Safety Score Beta version 2.1 has a more accurate assessment of your future collision risk based on over 30 billion miles of driving data. The key changes from version 2.0 to version 2.1 are:

  • Updated Late-Night Driving to be risk weighted based on driving from 11 PM – 4 AM (previously 10 PM to 4 AM). The impact of late-night driving on your Safety Score will depend on the proportion of time spent driving in each hour from 11 PM – 4 AM.

Note: Availability of Safety Factors will vary based on your Tesla vehicle’s Infotainment hardware.

Safety Factors

There are several Safety Factors that impact your Safety Score. These are measured directly by your Tesla vehicle using various sensors on the vehicle and Autopilot software.

Forward collision warning
Forward Collision Warnings per 1,000 Non-Autopilot Miles

Forward Collision Warnings are audible and visual alerts provided to the driver in events where a possible collision due to an object in front of the vehicle is considered likely without driver intervention. Forward Collision Warnings are incorporated into the Safety Score Beta formula as a rate per 1,000 non-Autopilot miles. The value is capped at 135.4 per 1,000 non-Autopilot miles in the Safety Score Beta formula.


Hard braking
Hard Braking

Hard braking is defined as backward acceleration, measured by your Tesla vehicle, in excess of 0.3g. This is the same as a decrease in the vehicle’s speed larger than 6.7 mph, in one second. Hard braking is introduced into the Safety Score Beta formula as the proportion of time where the vehicle experiences backward acceleration greater than 0.3g as a percentage of the proportion of time the vehicle experiences backward acceleration greater than 0.1g (2.2 mph in one second). Hard braking while on Autopilot is not factored into the Safety Score Beta formula. For vehicles with Autopilot computer 3.0 or greater, braking while the vehicle detects yellow traffic lights is also not factored into the Safety Score Beta formula. If the vehicle is unable to detect a yellow traffic light at the time of the hard braking, the event will impact your Safety Score. The percentage shown in the app is the proportion of time spent braking done with excessive force when driving and Autopilot is not engaged. The value is capped at 5.4% in the Safety Score Beta formula.


Aggressive turning
Aggressive Turning

Aggressive turning is defined as left/right acceleration, measured by your Tesla vehicle, in excess of 0.4g. This is the same as an increase in the vehicle’s speed to the left/right larger than 8.9 mph, in one second. Aggressive turning is introduced into the Safety Score Beta formula as the proportion of time the vehicle experiences left or right acceleration greater than 0.4g as a percentage of the proportion of time the vehicle experiences left or right acceleration greater than 0.2g (4.5 mph in one second). Aggressive turning while on Autopilot is not factored into the Safety Score Beta formula. The percentage shown in the Tesla app is the proportion of time spent turning with excessive force when driving and Autopilot is not engaged. The value is capped at 14.7% in the Safety Score Beta formula.


Unsafe following
Unsafe Following

Your Tesla vehicle measures its own speed, the speed of the vehicle in front and the distance between the two vehicles. Based on these measurements, your vehicle calculates the number of seconds you would have to react and stop if the vehicle in front of you came to a sudden stop. This measurement is called “headway.” Unsafe following is the proportion of time where your vehicle’s headway is less than 1.0 seconds relative to the time that your vehicle’s headway is less than 3.0 seconds. Unsafe following is only measured when your vehicle is traveling at least 50 mph and is incorporated into the Safety Score Beta formula as a percentage. Unsafe following while on Autopilot is not factored into the Safety Score Beta formula. The percentage shown in the Tesla app is the percentage of unsafe following when driving and Autopilot is not engaged. The value is capped at 63.5% in the Safety Score Beta formula.


Excessive speeding
Excessive Speeding

Excessive Speeding is defined as the proportion of time spent driving in excess of 85 mph, as a percentage of the total time driving. The value shown in the Tesla app is the proportion of time driven at a speed over 85 mph versus all driving time. The value is capped at 7.1% in the Safety Score Beta formula.


Late Night Driving
Late-Night Driving

Late-Night Driving is defined as the number of seconds you spend driving at night (11 PM - 4 AM) divided by the number of seconds you spend driving total during the day and night. Due to the variable risk level associated with driving during each late-night hour, each hour is weighed differently, and driving at each hour will affect your Safety Score differently. For example, driving at 11 PM will not affect your Safety Score as heavily as driving at 2 AM. Drive sessions that span two days will apply to the day the trip ends. Late-Night Driving includes all driving at night (11 PM – 4 AM) including any driving done on Autopilot. The value is capped at 13.7% in the Safety Score Beta formula.


Forced Autopilot disengagement
Forced Autopilot Disengagement

The Autopilot system disengages for the remainder of a trip after the driver has received three audio and visual warnings. These warnings occur when your Tesla vehicle has determined that the driver has not applied sufficient resistance to the steering wheel or has become inattentive. Forced Autopilot Disengagement is introduced into the Safety Score Beta formula as a 1 or 0 indicator. The value is 1 if the Autopilot system is forcibly disengaged during a trip, and 0 otherwise.


Unbuckled seatbelt
Unbuckled Driving

Unbuckled Driving is defined as the proportion of time spent driving above 10 mph without fastening the driver’s seatbelt in a Tesla vehicle, as a percentage of time spent driving above 10 mph. The value shown in the Tesla app is the proportion of time driven at a speed over 10 mph, without buckling the driver’s seatbelt, as a percentage of time spent driving over 10 mph. The value is capped at 18.2% in the Safety Score Beta formula.


Determining Your Safety Score

In order to calculate your daily Safety Score, we use the Predicted Collision Frequency (PCF) formula below to predict how many collisions may occur per 1 million miles driven, based on driving behaviors measured by your Tesla vehicle. Driving on Autopilot (including 5 seconds after Autopilot is disengaged) will not be factored into the Safety Score Beta formula, but the miles driven while on Autopilot are included in the total.

Predicted Collision Frequency (PCF) = 0.50243837

x

1.00890677Forward Collision Warnings per 1,000 Non-Autopilot Miles

 

x

1.18282601Hard Braking

 

x

1.01997156Aggressive Turning

 

x

1.00431643Unsafe Following Time

 

x

1.26582521Forced Autopilot Disengagement

 

x

1.06088826Late-Night Driving

 

x

1.00449763Excessive Speeding

 

x

1.01500342Unbuckled Driving

The current formula was derived based on statistical modeling using over 30 billion miles of fleet data. We expect to make further changes to the formula in the future as we gain more customer and data insights.

The PCF is converted into a 0 to 100 Safety Score using the following formula:

Safety Score = 113.96245249 - 27.78938322

x

PCF

Your daily Safety Score is not impacted by the number of miles you drive. We combine your daily Safety Scores (up to 30 days) into a mileage-weighted average to calculate the aggregated Safety Score, which is displayed on the main ‘Safety Score’ screen of the Tesla app.

Note: Since Tesla vehicles with hardware older than Autopilot computer 2.0 do not measure following distance, Forward Collisions Warnings per 1,000 non-Autopilot miles and Unsafe Following Time is replaced by default values of 15.6 and 21.6% in the PCF formula, respectively. For these vehicles, the value of 113.96245249 is replaced by 108.43874088 in the Safety Score Beta formula.

Improving Your Safety Score

You can improve your Safety Score by improving each Safety Factor.

Forward Collision Warnings per 1,000 Non-Autopilot Miles

Maintain a safe following distance from the vehicle in front to give you enough time to react to slower or stationary vehicles. Pay attention to the other vehicles on the road and reduce speed in traffic congested areas.

Hard Braking

Engage the brake pedal early when slowing down, coming to a stop or reacting to a change in your environment. Use regenerative braking whenever possible and safe to do so. Maintaining a safe following distance reduces the instances where the brake pedal needs to be applied with extreme force.

Aggressive Turning

When turning, changing lanes or rounding a corner, do so gradually. Reduce your speed heading into a turn, gradually accelerating out of the turn. Do not unnecessarily jerk the steering wheel.

Unsafe Following

Do not tailgate or drive close to the vehicle in front. Maintain a following distance of several car-lengths to the vehicle in front to have sufficient time to react to its speed. Remember that driving at higher speeds in inclement weather or on slick road surfaces requires a greater following distance to allow sufficient time to react safely.

Excessive Speeding

Plan a little extra time when commuting so you can arrive on time without driving over 85 mph. Traveling at high speed adds additional risk when driving, so paying close attention to your speed and following the speed limit can help reduce potential risk and raise your Safety Score.

Late-Night Driving

Plan your trips to avoid driving between the hours of 11 PM and 4 AM to help reduce the likelihood of a dangerous driving environment.

Forced Autopilot Disengagement

Only use the various Autopilot features as described in your Tesla Owner’s Manual. Pay attention to the road and maintain your hands on the steering wheel while the Autopilot system is engaged. Autosteer detects your hands by recognizing slight resistance as the steering wheel turns, or from you manually turning the steering wheel very lightly (without enough force to take over steering). Autosteer also qualifies your hands as being detected if you engage a turn signal or use a button or scroll wheel on the steering wheel.

Unbuckled Driving

Build a habit of fastening your seatbelt in the driver’s seat before you shift out of park. Even at slow speeds, wearing your seatbelt is an easy way to help reduce risk while driving and avoid serious injury.

Frequently Asked Questions Show All Hide All

What Changed in Version 2.0

Safety Score Beta version 2.0 features several updates including two new Safety Factors and updates to how driving behavior is measured and Safety Score is calculated. Here are the key changes from version 1.2 to version 2.0:

  • Added Excessive Speeding as a new Safety Factor. More time spent driving over 85 mph will lead to a lower Safety Score.
  • Added Unbuckled Driving as a new Safety Factor. Time spent driving over 10 mph without buckling the driver’s seatbelt will lead to a lower Safety Score.
  • Updated Late-Night Driving to be risk weighted based on when driving from 10 PM – 4 AM. The impact of late-night driving on your Safety Score will depend on the proportion of time spent driving in each hour from 10 PM – 4 AM. The impact on your Safety Score is now reduced earlier in the night and increased later in the night.
  • Updated Hard Braking Safety Factor to exclude braking events that occur when the vehicle detects a yellow traffic light.

Note: Availability of these features will vary based on your Tesla vehicle’s Infotainment hardware.

Safety Factors

There are several Safety Factors that impact your Safety Score. These are measured directly by your Tesla vehicle using various sensors on the vehicle and Autopilot software.

Forward collision warning
Forward Collision Warnings per 1,000 Non-Autopilot Miles

Forward Collision Warnings are audible and visual alerts provided to the driver in events where a possible collision due to an object in front of the vehicle is considered likely without driver intervention. Forward Collision Warnings are incorporated into the Safety Score Beta formula as a rate per 1,000 non-Autopilot miles. The value is capped at 130.7 per 1,000 non-Autopilot miles in the Safety Score Beta formula.


Hard braking
Hard Braking

Hard braking is defined as backward acceleration, measured by your Tesla vehicle, in excess of 0.3g. This is the same as a decrease in the vehicle’s speed larger than 6.7 mph, in one second. Hard braking is introduced into the Safety Score Beta formula as the proportion of time where the vehicle experiences backward acceleration greater than 0.3g as a percentage of the proportion of time the vehicle experiences backward acceleration greater than 0.1g (2.2 mph in one second). Hard braking while on Autopilot is not factored into the Safety Score Beta formula. For vehicles with Autopilot computer 3.0 or greater, braking while the vehicle detects yellow traffic lights is also not factored into the Safety Score Beta formula. If the vehicle is unable to detect a yellow traffic light at the time of the hard braking, the event will impact your Safety Score. The percentage shown in the app is the proportion of time spent braking done with excessive force when driving and Autopilot is not engaged. The value is capped at 5.8% in the Safety Score Beta formula.


Aggressive turning
Aggressive Turning

Aggressive turning is defined as left/right acceleration, measured by your Tesla vehicle, in excess of 0.4g. This is the same as an increase in the vehicle’s speed to the left/right larger than 8.9 mph, in one second. Aggressive turning is introduced into the Safety Score Beta formula as the proportion of time the vehicle experiences left or right acceleration greater than 0.4g as a percentage of the proportion of time the vehicle experiences left or right acceleration greater than 0.2g (4.5 mph in one second). Aggressive turning while on Autopilot is not factored into the Safety Score Beta formula. The percentage shown in the Tesla app is the proportion of time spent turning with excessive force when driving and Autopilot is not engaged. The value is capped at 15.7% in the Safety Score Beta formula.


Unsafe following
Unsafe Following

Your Tesla vehicle measures its own speed, the speed of the vehicle in front and the distance between the two vehicles. Based on these measurements, your vehicle calculates the number of seconds you would have to react and stop if the vehicle in front of you came to a sudden stop. This measurement is called “headway.” Unsafe following is the proportion of time where your vehicle’s headway is less than 1.0 seconds relative to the time that your vehicle’s headway is less than 3.0 seconds. Unsafe following is only measured when your vehicle is traveling at least 50 mph and is incorporated into the Safety Score Beta formula as a percentage. Unsafe following while on Autopilot is not factored into the Safety Score Beta formula. The percentage shown in the Tesla app is the percentage of unsafe following when driving and Autopilot is not engaged. The value is capped at 64.2% in the Safety Score Beta formula.


Excessive speeding
Excessive Speeding

Excessive Speeding is defined as the proportion of time spent driving in excess of 85 mph, as a percentage of the total time driving. The value shown in the Tesla app is the proportion of time driven at a speed over 85 mph versus all driving time. The value is capped at 7.6% in the Safety Score Beta formula.


Late Night Driving
Late-Night Driving

Late-Night Driving is defined as the number of seconds you spend driving at night (10 PM - 4 AM) divided by the number of seconds you spend driving total during the day and night. Due to the variable risk level associated with driving during each late-night hour, each hour is weighed differently, and driving at each hour will affect your Safety Score differently. For example, driving at 10 PM will not affect your Safety Score as heavily as driving at 2 AM. Drive sessions that span two days will apply to the day the trip ends. Late-Night Driving includes all driving at night (10 PM – 4 AM) including any driving done on Autopilot. The value is capped at 15.2% in the Safety Score Beta formula.


Forced Autopilot disengagement
Forced Autopilot Disengagement

The Autopilot system disengages for the remainder of a trip after the driver has received three audio and visual warnings. These warnings occur when your Tesla vehicle has determined that the driver has not applied sufficient resistance to the steering wheel or has become inattentive. Forced Autopilot Disengagement is introduced into the Safety Score Beta formula as a 1 or 0 indicator. The value is 1 if the Autopilot system is forcibly disengaged during a trip, and 0 otherwise.


Unbuckled seatbelt
Unbuckled Driving

Unbuckled Driving is defined as the proportion of time spent driving above 10 mph without fastening the driver’s seatbelt in a Tesla vehicle, as a percentage of time spent driving above 10 mph. The value shown in the Tesla app is the proportion of time driven at a speed over 10 mph, without buckling the driver’s seatbelt, as a percentage of time spent driving over 10 mph. The value is capped at 4.1% in the Safety Score Beta formula.


Determining Your Safety Score

In order to calculate your daily Safety Score, we use the Predicted Collision Frequency (PCF) formula below to predict how many collisions may occur per 1 million miles driven, based on driving behaviors measured by your Tesla vehicle. Driving on Autopilot (including 5 seconds after Autopilot is disengaged) will not be factored into the Safety Score Beta formula, but the miles driven while on Autopilot are included in the total.

Predicted Collision Frequency (PCF) = 0.83220180

x

1.012555104Forward Collision Warnings per 1,000 Non-Autopilot Miles

 

x

1.16460827Hard Braking

 

x

1.01498152Aggressive Turning

 

x

1.00245084Unsafe Following Time

 

x

1.40663310Forced Autopilot Disengagement

 

x

1.05018975Late-Night Driving

 

x

1.00939791Excessive Speeding

 

x

1.00901189Unbuckled Driving

The current formula was derived based on statistical modeling using 8 billion miles of fleet data. We expect to make further changes to the formula in the future as we gain more customer and data insights.

The PCF is converted into a 0 to 100 Safety Score using the following formula:

Safety Score = 112.29263237 - 14.77121589

x

PCF

Your daily Safety Score is not impacted by the number of miles you drive. We combine your daily Safety Scores (up to 30 days) into a mileage-weighted average to calculate the aggregated Safety Score, which is displayed on the main ‘Safety Score’ screen of the Tesla app.

Note: Since Tesla vehicles with hardware older than Autopilot computer 2.0 do not measure following distance, Forward Collisions Warnings per 1,000 non-Autopilot miles and Unsafe Following Time is replaced by default values of 15.6 and 22.2% in the PCF formula, respectively. For these vehicles, the value of 112.29263237 is replaced by 115.76503741 in the Safety Score Beta formula.

Improving Your Safety Score

You can improve your Safety Score by improving each Safety Factor.

Forward Collision Warnings per 1,000 Non-Autopilot Miles

Maintain a safe following distance from the vehicle in front to give you enough time to react to slower or stationary vehicles. Pay attention to the other vehicles on the road and reduce speed in traffic congested areas.

Hard Braking

Engage the brake pedal early when slowing down, coming to a stop or reacting to a change in your environment. Use regenerative braking whenever possible and safe to do so. Maintaining a safe following distance reduces the instances where the brake pedal needs to be applied with extreme force.

Aggressive Turning

When turning, changing lanes or rounding a corner, do so gradually. Reduce your speed heading into a turn, gradually accelerating out of the turn. Do not unnecessarily jerk the steering wheel.

Unsafe Following

Do not tailgate or drive close to the vehicle in front. Maintain a following distance of several car-lengths to the vehicle in front to have sufficient time to react to its speed. Remember that driving at higher speeds in inclement weather or on slick road surfaces requires a greater following distance to allow sufficient time to react safely.

Excessive Speeding

Plan a little extra time when commuting so you can arrive on time without driving over 85 mph. Traveling at high speed adds additional risk when driving, so paying close attention to your speed and following the speed limit can help reduce potential risk and raise your Safety Score.

Late-Night Driving

Plan your trips to avoid driving between the hours of 10 PM and 4 AM to help reduce the likelihood of a dangerous driving environment.

Forced Autopilot Disengagement

Only use the various Autopilot features as described in your Tesla Owner’s Manual. Pay attention to the road and maintain your hands on the steering wheel while the Autopilot system is engaged. Autosteer detects your hands by recognizing slight resistance as the steering wheel turns, or from you manually turning the steering wheel very lightly (without enough force to take over steering). Autosteer also qualifies your hands as being detected if you engage a turn signal or use a button or scroll wheel on the steering wheel.

Unbuckled Driving

Build a habit of fastening your seatbelt in the driver’s seat before you shift out of park. Even at slow speeds, wearing your seatbelt is an easy way to help reduce risk while driving and avoid serious injury.

Frequently Asked Questions Show All Hide All
Previous Safety Score Beta Versions

Previous Safety Score Beta Versions