How Does comma ai Drive a Toyota Prius?

TL;DR

comma ai drives the Toyota Prius by combining the car’s built-in longitudinal control with comma ai’s lateral control. The prototype operates through a panda universal car interface, while the driver keeps hands close to the wheel because the Prius has a significantly higher torque limit than the Honda Civic. Read on for details about steering, parking, sensors, compatible cars, and openpilot’s plans.

Transcript

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Key Insights

• ✋ Toyota Prius features a high torque limit, requiring attentive control.
• ✈️ Honda Civic's lane-keeping system is preferred over Toyota's.
• 🤗 Open pilot plans to support a range of popular vehicle models in the future.
• 🤳 Comparison of self-parking systems highlights potential areas for improvement.
• 🤗 Integration of open pilot with universal car interfaces like the panda is showcased.
• 🫢 Vision-only ACC can be used for gas-only cruise control in compatible vehicles.
• 🚗 Discussion on the future dominance of Tesla in the auto industry.

Questions & Answers

Q: How does comma ai control the self-driving Toyota Prius?

The Prius uses its built-in longitudinal control, while comma ai provides lateral control. The control signals are sent to the Prius through a panda universal car interface.

Q: Why does the driver keep their hands close to the Prius steering wheel?

The Prius has a significantly higher torque limit than the Honda Civic. The driver keeps their hands about an inch from the wheel so they can respond quickly if necessary, although they are not moving the wheel.

Q: Can the Toyota Prius park and drive by itself?

The Prius can park by itself, but the presenter says that this does not mean it can drive itself. Its self-parking ability is separate from the comma ai driving controls being demonstrated.

Q: How does Toyota’s lane-keeping system compare with Honda’s?

The presenter says the Honda lane-keeping system is much better than Toyota’s. Toyota’s built-in lane-keeping system is described as practically nonexistent.

Q: Which cars did comma ai plan to support?

The stated plan was to support almost all Hondas and the Toyota RAV4 Hybrid by the end of the year. The team was traveling to buy a 2017 RAV4 and said it would work.

Q: Which car does comma ai consider its flagship?

The Honda Civic is described as the best current car and comma ai’s existing flagship. The Toyota Prius was expected to become the flagship by the end of the year.

Q: Why is the Toyota Prius useful for comma ai development?

The Prius has sensors such as blind-spot awareness and an electric motor. The presenter says the electric motor can be controlled more precisely than a gasoline motor.

Q: What is the panda interface used for in the Prius?

The panda carries all the control signals being sent to the Prius during the drive. It is described as a universal car interface, and the unit in the prototype is said to be the same panda being shipped to buyers.

Summary & Key Takeaways

• Demonstrates controls and features of a self-driving Prius.

• Compares Toyota and Honda lane-keeping systems.

• Discusses future support for various vehicle models by open pilot.