Nope. However, provisions should be put into place by which a police agency can request the GPS information from such a car. There's no need to "pull it over". Let's say a cop spots someone who he thinks is a criminal in a Google self-driving car. All he would have to do is to take down the license plate, file the appropriate paperwork, and get a full history of where the car has been in the relevant time period.

If you give police the ability to stop a self-driving car, them that capability will inevitably be abused at the hands of corrupt law enforcement and be available to the public. If there's a switch that turns off the car, someone will steal one and reverse engineer it. The potential for abuse of automated stops of self-driving vehicles is simply too high, and there's no benefit to the technology. Why confront a criminal in a situation where he's likely to feel most cornered when you can simply obtain the car's tracking data, and knock on his door?

The issue becomes pressing when there's no longer a driver override. You get in the car, and tell it where you want to go. Like a taxi.

How does the car distinguish a real policeman from a fake, who wants to rob or harm you? (I was going to say "jack your car," but that makes no sense.) Issue street officers a police-only secret code to override the car's instructions, and make it pull over? That would stay secret for milliseconds.

We (mostly) trust human taxi drivers to obey what appear to be lawful orders from law enforcement. If I knock over a liquor store, and hop into a cab, the police use flashing blue lights to convince the cabbie to pull over, so that I may be apprehended. We need the same thing for driverless cars.

Is it as simple as a flashing-blue-light detector?

Hell no. I don't even trust them with the power they have now.

No, because that police override will end up in other people's hands as well, for possible nefarious purposes.

For the sake of discussion, not because I believe it, I'm going to say yes, yes they should.

If cops have control of the vehicles like this, then it means they will feel like they have control of a situation, which means they may be less twitchy, less fearful, so more likely to resort to violence as a first defense.

It would also prevent deadly chases through public areas that often result in collateral damage and injuries to civilians.

And that's all I have. Can anyone else think of any positive spins on this?