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Rider Capacity Feature on AC Transit Buses

Rider Capacity Feature on AC Transit Buses

Rider Capacity Feature Header Graphic

Find out if the next bus is full with real time rider capacity information on your mobile device. Try AC Transit’s rider capacity feature, available for most trips.

How it Works

Approximately 80% of AC Transit’s fleet is equipped with automated passenger counting (APC) sensors that feed into our data—providing real-time rider capacity information for all AC Transit bus lines on most trips. This data is refreshed every 15-seconds, providing riders with up-to-date trip planning information.

For some trips, rider capacity information is not yet available, but we are working to equip all buses in the fleet with APC sensors.

Plan Ahead


Icons displayed next to each trip determine whether or not the bus is full.

If the next bus does not show any crowding prediction, it means that bus is not yet equipped with APC sensors and cannot make a prediction.

Get the Rider Capacity Feature

The rider capacity feature is already embedded into AC Transit’s existing real-time trip planning tools. If you don’t already use these tools, there are a variety of ways to access them.

  • Download the AC Transit Official app, free on iOS and Android, available in the app store.
  • Visit from your desktop or mobile device
  • Call Customer Service at 510-891-4777 and select option 2 or call 511.
  • This information is also available from other third-party partners that use our data, like Transit app.

What’s Next

While most AC Transit buses are equipped with passenger counting technology, a small percentage still need to be retrofitted. AC Transit is actively pursuing ways to modernize our entire fleet, enabling the rider capacity feature for all trips.

Tell Us What You Think

Let us know what you think about the rider capacity feature. If you’ve used this feature and have feedback, share it with us at, or call Customer Service at (510) 891-4777, option 2.