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Comment by Longhanks | Hacker News Reader

> It absolutely refuses to drive faster than the speed limits, going 25 on two lane main streets where everyone expects you to go 40.

This is not an issue with self driving but rather law enforcement.

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The law enforcement will stop you if you hold up the traffic by going 25

But it won’t if you go over the speed limit?

I’m not sure what a self driving car is supposed to do here. Hell, as a foreigner, I myself wouldn’t know what to do.

I think this is pretty common all around the world.

But the again, you raise a fair point. I don't know what course of action an autonomous vehicle is supposed to take here. If anything, in HCI, you want consistent actions to be taken, for users to reward you with a higher level of trust.

I'm highly suspicious of such a claim. So you're saying that in a 25mph zone, a cop will pull you for doing 25mph because you're holding up people that wish to exceed the speed limit? Not in any U. S. state that I've lived in.

You can be if you’re impeding the flow of traffic. It is one of those iykyk rules of the road. Ideally, you need to be in speed limit + 5 to not get a ticket. But, if everyone else is going faster and you suddenly are the one driving slower, you’re not only blocking the traffic, but also creating unsafe driving conditions. In cases like that, you’re supposed to go the lane speed. In my case, it’s a 2 lane major street that funnels most traffic within the city, but unfortunately the limits set on the street are 25, like rest of the city. The standard practice on this particular street is to go at least 30 and stay in the right lane if you’re not willing to go beyond 30. Tesla not only drives 25 max, but also sometimes insists on driving in the left lane.

https://www.ticketcrusherslaw.com/traffic-ticket/speeding-ti....

No one is going to get a ticket for going the speed limit.

Well I shared the link to the legal explanation with the exact law listed. It’s up to you to not believe it.

The legal explanation clearly states it is applicable to highways only. I'm sure 25mph / 40kmh is not the intended way of driving there.

So yeah, I still don't believe you that I'd be fined for driving 25mph in an area, where 25mph is the speed limit.

“unless the reduced speed is necessary for safe operation”

If somehow you got a ticket for this, you’d just say it was necessary for safe operation, after all, why else would there be a speed limit in the first place?

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