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  • A lot of modern cars come with advanced driver assistance systems,

  • things like adaptive cruise control that keeps a safe distance from the car in front

  • or automated emergency braking to avoid collisions

  • or lane assist, to...

  • keep you in lane.

  • Which is great, as long as the driver knows the system's limits.

  • The worst modern car I've ever driven came with

  • adaptive cruise control that turned itself off

  • if you went under 20mph.

  • So if the car in front slowed down for a traffic jam, so would you,

  • until you went under 20,

  • at which point the car just handed control off to you

  • with a very quiet beep.

  • And if you weren't expecting that...

  • This is the Global Vehicle Target

  • and, as of this year, it is part of the EuroNCAP standard

  • on how to test the safety of automated driving systems.

  • But it isn't just a static foam model.

  • This base here is a robot platform that goes up to 50mph,

  • which means you can test safely with both vehicles going at highway speed.

  • Right, my turn in the passenger seat.

  • I mean, of the real car, not this.

  • This doesn't have a passenger seat.

  • - Thatcham Research is a not-for-profit insurance-funded research centre.

  • In about 2014, it became clear that the next generation of technologies

  • weren't just going to look for the rear end of the car,

  • they were going to look at the side of the car

  • and even the front of the car.

  • We've got to have a target that actually looks like a three-dimensional car.

  • The impactable bit, the visual pieces of the car,

  • are actually foam target blocks which are assembled to look like a car

  • and covered with a radar material.

  • Generally, you can put the target, from start,

  • back together in about 15 to 20 minutes.

  • And what we've done is we've used test equipment

  • that actually measures the radar reflectivity of a real vehicle.

  • So you get radar reflectivity of a wheel.

  • And even the glass, the back of the vehicle, has a certain radar signature.

  • So it's about putting radar reflectors

  • and also radar-absorbent material in the right place.

  • So the brand-new tests that we're going to introduce in 2020

  • are what we call turn-across-path,

  • where your vehicle is moving in front of another vehicle

  • and we want your vehicle to brake.

  • We're also developing junction tests

  • where a vehicle moves across your path laterally

  • and therefore we need to see the side of the vehicle.

  • And we're confident that if a vehicle brakes for our target,

  • it'll brake for a real vehicle in the real world.

  • - This should stop in time?

  • - Yes, yeah. - OK.

  • All right, let's do it.

  • [alarm chiming]

  • [braking system rumbling] - Whoa!

  • First of all, that works.

  • That's good. - Yep, we have stopped.

  • - Oh, that made me feel so nervous.

  • - It's deliberately late and harsh.

  • - Radars are very good at understanding if something is moving.

  • They can identify what it is.

  • However, if you just come across an object and it's stationary,

  • it's much harder for the radar to identify that that's a vehicle.

  • What's the difficulty is understanding: has the driver seen it?

  • And what are the driver intentions?

  • So if you've got a vehicle that's parked in front of you,

  • it doesn't want to warn you too early,

  • because that's gonna annoy the driver and we don't want that,

  • because if your driver is annoyed,

  • he'll turn the system off.

  • One of the problems vehicle manufacturers have is

  • there are not only differences in the road infrastructure,

  • but there's actually national characteristics.

  • People in Germany tend to drive slightly more aggressively.

  • And, therefore, the issue of false positives,

  • it's much more of an issue.

  • Whereas the Swedes will tell that they're much more benign

  • and, therefore, a vehicle that's just stationary,

  • warning the driver won't really annoy him too much.

  • - OK, so what happens if we go slightly faster?

  • - Well, we'll try it, and it should be, you know...

  • We'll do 40mph rather than 35.

  • - All right.

  • (Oh, I don't like this.)

  • I really don't like this.

  • [alarm chiming]

  • [braking system rumbling] - Ohhh!

  • [alarm chiming]

  • Does it slightly brake to warn you?

  • - Yes. - Yes.

  • - You hope, with that little brake, it's enough for the driver to go,

  • oh, this is... something strange is happening,

  • - Yeah, yeah. - and do it themselves.

  • - OK, yeah, that works.

  • So does the target!

  • - Yep, yeah.

  • - Thank you very much to all the team at Thatcham Research.

  • Pull down the description for more about them and their work.

  • Wow!

  • There is one tyre upright, just there.

A lot of modern cars come with advanced driver assistance systems,

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B1 中級

折りたたみ式クラッシュテストロボットカー (The Collapsible Crash Test Robot Car)

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    林宜悉 に公開 2021 年 01 月 14 日
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