Traffic-Aware Cruise Control

Note: Traffic-Aware Cruise Control is a BETA feature.

Traffic-Aware Cruise Control determines when there is a vehicle in front of you in the same lane. If the area in front of Model 3Model Y is clear, Traffic-Aware Cruise Control maintains a set driving speed. When a vehicle is detected, Traffic-Aware Cruise Control is designed to slow down Model 3Model Y as needed to maintain a selected time-based distance from the vehicle in front, up to the set speed. Traffic-Aware Cruise Control does not eliminate the need to watch the road in front of you and to manually apply the brakes when needed.

Traffic-Aware Cruise Control is primarily intended for driving on dry, straight roads, such as highways and freeways.

CAUTION: Ensure all cameras and sensors are clean before each drive. Dirty cameras and sensors, as well as environmental conditions such as rain and faded lane markings, can affect Autopilot performance.

Warning: Traffic-Aware Cruise Control is designed for your driving comfort and convenience and is not a collision warning or avoidance system. It is your responsibility to stay alert, drive safely, and be in control of the vehicle at all times. Never depend on Traffic-Aware Cruise Control to adequately slow down Model 3Model Y. Always watch the road in front of you and be prepared to take corrective action at all times. Failure to do so can result in serious injury or death.

Warning: Although Traffic-Aware Cruise Control is capable of detecting pedestrians and cyclists, never depend on Traffic-Aware Cruise Control to adequately slow Model 3Model Y down for them. Always watch the road in front of you and be prepared to take corrective action at all times. Failure to do so can result in serious injury or death.

Warning: Do not use Traffic-Aware Cruise Control on winding roads with sharp curves, on icy or slippery road surfaces, or when weather conditions (such as heavy rain, snow, fog, etc.) make it inappropriate to drive at a consistent speed. Traffic-Aware Cruise Control does not adapt driving speed based on road and driving conditions.

To Use Traffic-Aware Cruise Control

To initiate Traffic-Aware Cruise Control when no vehicle is detected ahead of you, you must be driving at least 18 mph (30 km/h), unless certain vehicle and environmental conditions are met, in which case, you may be able to initiate it at lower speeds. If a vehicle is detected ahead of you, you can initiate Traffic-Aware Cruise Control at any speed, even when stationary, provided Model 3Model Y is at least 5 feet (150 cm) behind the detected vehicle and certain vehicle and environmental conditions are met.

Note: The maximum cruising speed is 90 mph (150 km/h). It is the driver's responsibility to cruise at a safe speed based on road conditions and speed limits.

When Traffic-Aware Cruise Control is available but not engaged, the touchscreen displays a gray speedometer icon beside the current driving speed. The number shown in gray represents the cruising speed that will be set when you engage Traffic-Aware Cruise Control.

When Traffic-Aware Cruise Control is actively cruising at a set cruising speed, the icon turns blue and displays the set cruising speed.

To engage Traffic-Aware Cruise Control when it is available, move the drive stalk down once, then release the accelerator pedal to allow Traffic-Aware Cruise Control to maintain the cruising speed.
Warning: When cruising at the speed limit, there may be situations where the cruising speed may not change when the speed limit changes.

Warning: Do not rely on Traffic-Aware Cruise Control or Speed Assist to determine an accurate or appropriate cruising speed. It is the driver's responsibility to cruise at a safe speed based on road conditions and applicable speed limits.

Note: Moving the drive stalk down twice in quick succession engages Autosteer (assuming it has been enabled) as described in Autosteer).
To change your speed while using Traffic-Aware Cruise Control, you can use the scroll wheel, drive stalk or touchscreen. For more details, see Changing the Cruising Speed.
- Roll the right scroll wheel up or down to increase or decrease your set speed.
- Pull and hold the drive stalk down for approximately half a second or touch the speed limit sign on the touchscreen to cruise at the speed limit.
To cancel Traffic-Aware Cruise Control, push the drive stalk up once or press the brake pedal. See Canceling and Resuming for more information.

Changing the Cruising Speed

Roll the right scroll wheel up to increase, or down to decrease, the set speed. Slowly rolling the scroll wheel changes the set speed in 1 mph (1 km/h) increments and quickly rolling the scroll wheel changes the set speed to the closest 5 mph (5 km/h) increment.

Image showing a zoombox going to the right scroll wheel with arrows going up and down on the scroll wheel.

You can also use the touchscreen and drive stalk to change the set cruising speed:

To adjust the cruising speed to your current driving speed, touch the speedometer icon.
To cruise at the speed limit (plus any offset), pull and hold the drive stalk down for approximately half a second or touch the speed limit icon on the touchscreen (if displayed).

Note: It may take a few seconds for Model 3Model Y to reach the new cruising speed, assuming Model 3Model Y does not detect a vehicle ahead driving slower than your set speed.

Cruising at the Set Speed

Traffic-Aware Cruise Control maintains your set cruising speed whenever a vehicle is not detected in front of Model 3Model Y. When cruising behind a detected vehicle, Traffic-Aware Cruise Control accelerates and decelerates Model 3Model Y as needed to maintain a chosen following distance (see Adjust the Following Distance), up to the set speed.

Traffic-Aware Cruise Control also adjusts the cruising speed when entering and exiting curves.

You can manually accelerate at any time when cruising at a set speed, but when you release the accelerator, Traffic-Aware Cruise Control resumes cruising at the set speed.

Note: When Traffic-Aware Cruise Control is actively slowing down Model 3Model Y to maintain the selected distance from the vehicle ahead, brake lights turn on to alert other road users that you are slowing down. You may notice slight movement of the brake pedal. However, when Traffic-Aware Cruise Control is accelerating Model 3Model Y, the accelerator pedal does not move.

Warning: Traffic-Aware Cruise Control may occasionally cause Model 3Model Y to brake when not required or when you are not expecting it. This can be caused by closely following a vehicle ahead, detecting vehicles or objects in adjacent lanes (especially on curves), etc.

Warning: Due to limitations inherent in the onboard GPS (Global Positioning System), you may experience situations in which Traffic-Aware Cruise Control slows down the vehicle, especially near highway exits where a curve is detected and/or you are actively navigating to a destination and not following the route.

Warning: Traffic-Aware Cruise Control cannot detect all objects and, especially in situations when you are driving over 50 mph (80 km/h), may not brake/decelerate when a vehicle or object is only partially in the driving lane or when a vehicle you are following moves out of your driving path and a stationary or slow-moving vehicle or object is in front of you. Always pay attention to the road ahead and stay prepared to take immediate corrective action. Depending on Traffic-Aware Cruise Control to avoid a collision can result in serious injury or death. In addition, Traffic-Aware Cruise Control may react to vehicles or objects that either do not exist or are not in the lane of travel, causing Model 3Model Y to slow down unnecessarily or inappropriately.

Warning: Traffic-Aware Cruise Control may be unable to provide adequate speed control because of limited braking capability and hills. It can also misjudge the distance from a vehicle ahead. Driving downhill can increase driving speed, causing Model 3Model Y to exceed your set speed (and potentially the road's speed limit). Never depend on Traffic-Aware Cruise Control to slow down the vehicle enough to prevent a collision. Always keep your eyes on the road when driving and be prepared to take corrective action as needed. Depending on Traffic-Aware Cruise Control to slow the vehicle down enough to prevent a collision can result in serious injury or death.

HOLD State

When following a vehicle, Traffic-Aware Cruise Control remains active at low speeds, even when Model 3Model Y comes to a full stop. When the vehicle is moving again, Traffic-Aware Cruise Control resumes operating at the set speed. However, under the following circumstances, Traffic-Aware Cruise Control goes into a HOLD state, in which case, you need to briefly press the accelerator pedal to resume cruising. When the HOLD status is active, the touchscreen displays the HOLD icon and a message that indicates that you need to resume cruise control. The following circumstances can cause Traffic-Aware Cruise Control to go into the HOLD state:

Model 3Model Y has been at a standstill for 5 minutes.
Model 3Model Y detects a pedestrian (the HOLD state may clear when the pedestrian is no longer detected).
Model 3Model Y suddenly loses visibility of the vehicle in front of you.
The ultrasonic sensors detect an obstacle in front of Model 3Model Y.

Cruising Near or On Freeway Exits

When cruising near an exit on a controlled access road (such as a highway or freeway) and engaging the turn signal toward the exit, Traffic-Aware Cruise Control assumes you are exiting and begins to slow down the vehicle. If you do not drive onto the exit, Traffic-Aware Cruise Control resumes cruising at the set speed. In a region with right hand traffic, this occurs only when you engage the right turn signal when driving in the right-most lane within 164 feet (50 meters) of an exit. Likewise in regions with left hand traffic; when engaging the left turn signal when driving in the left-most lane within 164 feet (50 meters) of an exit.

When cruising onto an on-ramp to a controlled access road (such as a highway or freeway), Traffic-Aware Cruise Control automatically adjusts the set cruising speed to the speed limit of the highway, plus any offset you have specified (see Speed Assist).

Note: The onboard Global Positioning System (GPS) determines if you are driving in a region with right or left hand traffic. In situations where GPS data is unavailable (for example, if there is inadequate signal), engaging the turn signal near an exit does not cause Traffic-Aware Cruise Control to slow down Model 3Model Y.

When enabled while on a highway interchange or off-ramp, Traffic-Aware Cruise Control may reduce your set speed in 5 mph (5 km/h) increments – to as slow as 25 mph (40 km/h) – to better match the reported speeds of other Tesla vehicles that have driven at that specific location. To override this and continue cruising at your set speed, tap the accelerator pedal or touch the plus (+) or minus (-) button on the touchscreen. The new set speed is maintained for the duration of the interchange or off-ramp (unless you override it or cancel Traffic-Aware Cruise Control). After the interchange or off-ramp, the set speed may revert or change as necessary based on the new location. For example, if you merged onto a different highway, the set speed reverts back to the set speed that was in use before driving on the interchange.

Warning: In some cases (such as having insufficient data), Traffic-Aware Cruise Control may not automatically reduce the set speed on the highway interchange or off-ramp. Do not rely on Traffic-Aware Cruise Control to determine an appropriate driving speed. Tesla recommends driving at a speed that is safe for road conditions and within posted speed limits.

Adjust the Following Distance

To adjust the following distance you want to maintain between Model 3Model Y and a vehicle traveling ahead of you, press the steering wheel's right scroll button to the left or right. Choose a setting from 1 (the closest following distance) to 7 (the longest following distance). Each setting corresponds to a time-based distance that represents how long it takes for Model 3Model Y, from its current location, to reach the location of the rear bumper of the vehicle ahead of you.

Note: For vehicles manufactured after approximately April 27, 2021, the closest following distance(s) may be unavailable.

Image showing a zoombox going to the right scroll wheel with arrows going left and right on the scroll wheel.

As you adjust the following distance, the touchscreen displays the current setting.

Screenshot of two cars with a measurement between them and the number "3".

Note: Your setting is retained until you manually change it.

Warning: It is the driver's responsibility to determine and maintain a safe following distance at all times. Do not rely on Traffic-Aware Cruise Control to maintain an accurate or appropriate following distance.

Warning: Never depend on Traffic-Aware Cruise Control to adequately slow down Model 3Model Y to avoid a collision. Always watch the road in front of you and stay prepared to take immediate corrective action.

Overtake Acceleration

When following a vehicle with Traffic-Aware Cruise Control active, engaging the turn signal (to indicate a move into the passing lane) accelerates Model 3Model Y towards the vehicle ahead. By momentarily holding the turn signal stalk up or down, you can quickly accelerate up to your set speed without having to press the accelerator pedal. The turn signal causes acceleration only when all of the following conditions are met:

Traffic-Aware Cruise Control is operating and detects a vehicle in front of you.
No obstacles or vehicles are detected in the target lane.
Model 3Model Y is traveling below the set speed, but over 45 mph (72 km/h).

Overtake Acceleration is intended as an aid when passing a vehicle ahead of you. When the turn signal is engaged, Traffic-Aware Cruise Control continues to maintain distance from the vehicle ahead, but allows you to drive slightly closer than your selected distance.

Acceleration cancels when one of the conditions happen:

You reach your set cruising speed.
Changing lanes takes too long.
Model 3Model Y gets too close to the vehicle ahead.
OR
You disengage the turn signal.

Note: Overtake Acceleration occurs when you hold the turn signal in the momentary position (partially engaged). When you release the turn signal, Model 3Model Y stops accelerating (in the same way as when you release the accelerator pedal) and resumes the set speed.

Warning: Overtake Acceleration can cancel for many unforeseen reasons in addition to those listed above (for example, lack of GPS data). Stay alert and never depend on Overtake Acceleration to increase your driving speed.

Warning: Overtake Acceleration increases your driving speed whenever the appropriate turn signal is engaged, and accelerates Model 3Model Y closer to the vehicle ahead. Although Traffic-Aware Cruise Control continues to maintain distance from the vehicle ahead, it is important to be aware that your selected following distance is reduced when Overtake Acceleration is active, particularly in cases where it may not be your intention to overtake the vehicle you are following.

Canceling and Resuming

To manually cancel Traffic-Aware Cruise Control, move the drive stalk up once or press the brake pedal. The speedometer icon on the touchscreen turns gray to indicate that Traffic-Aware Cruise Control is no longer active.

Warning: Do not hold the drive stalk up for more than one second. Doing so cancels Traffic-Aware Cruise Control and shifts Model 3Model Y into Neutral.

Image of the drive stalk with an arrow going up.

To re-enable cruising at the current driving speed, move the drive stalk fully down once then release.

Image of the drive stalk with an arrow going down.

Note: When Traffic-Aware Cruise Control cancels, Model 3Model Y does not coast. Instead, regenerative braking slows down Model 3Model Y in the same way as when you move your foot off the accelerator when driving without Traffic-Aware Cruise Control (see Regenerative Braking).

Warning: Traffic-Aware Cruise Control cancels, or may not be available, in the following situations:

You press the brake pedal.
Your driving speed exceeds the maximum cruising speed of 90 mph (150 km/h).
You shift Model 3Model Y into a different gear.
A door is opened.
The view from the radar sensor (if equipped) or camera(s) is obstructed. This could be caused by dirt, mud, ice, snow, fog, etc.
The traction control setting is manually disabled or is repeatedly engaging to prevent wheels from slipping.
The wheels are spinning while at a standstill.
The Traffic-Aware Cruise Control system is failing or requires service.

When Traffic-Aware Cruise Control is unavailable or cancels, Model 3Model Y no longer drives consistently at a set speed and no longer maintains a specified distance from the vehicle ahead.

Warning: Traffic-Aware Cruise Control can cancel unexpectedly at any time for unforeseen reasons. Always watch the road in front of you and stay prepared to take appropriate action. It is the driver's responsibility to be in control of Model 3Model Y at all times.

Summary of Cruise Indicators

Traffic-Aware Cruise Control is available but is not actively controlling your speed until you activate it. The number shown in gray is determined by Speed Assist (see Controlling Speed Assist).

Traffic-Aware Cruise Control is operating and is either maintaining the set speed (no vehicle in front) or is maintaining a chosen following distance from a vehicle ahead (up to the set speed).

Model 3Model Y has fully stopped but is in a HOLD state. If safe, press the accelerator pedal to resume cruising at the set speed.

Limitations

Traffic-Aware Cruise Control is particularly unlikely to operate as intended in the following types of situations:

The road has sharp curves.
Visibility is poor (due to heavy rain, snow, fog, etc.).
Bright light (such as from oncoming headlights or direct sunlight) is interfering with the view of the camera(s).
The radar sensor (if equipped) is obstructed (dirty, covered, etc.).
The windshield is obstructing the view of the camera(s) (fogged over, dirty, covered by a sticker, etc.).

Warning: The list above does not represent an exhaustive list of situations that may interfere with proper operation of Traffic-Aware Cruise Control.