托福瀏覽文章的素材是起源於多方面的，是以，考生要想在托福瀏覽測驗中有一個不錯的施展，就要在日常平凡的備登科多懂得一些常識，下面給考生分享下托福瀏覽素材：主動駕駛汽車在美國上牌，供考生參考。
美海內華達州靈活車治理部分克日向谷歌發表了首個主動駕駛汽車派司，以進一步磨練此類車輛在現實途徑駕駛中的機能。該汽車派司為赤色，上面用無窮大標記∞來與別的車輛舉行區別。假如希望順遂，主動駕駛汽車有望於三到五年內面市。屆時，主動駕駛車輛的車牌將會定為綠色。
據先容，主動駕駛汽車實際上是用主動駕駛儀來掌握車輛，不須要人類駕駛員有任何操縱，也不會像人類駕駛員那樣輕易分神。安置在車頂和保險杠上的激光雷達可以隨時監測車輛周邊行人和車輛的情形，並會在各種停滯物與車輛之間構成一個假造的緩沖地區，以使車輛可以或許平安避開。
Department of Motor Vehicles officials said Monday they've issued Google the nation's first license to test self-driving cars on public streets.
Nevada drivers could soon be sharing the road with vehicles that don't need them.
Department of Motor Vehicles officials said Monday they've issued Google the nation's first license to test self-driving cars on public streets, after conducting demonstrations on the Las Vegas Strip and in Carson City that show the car is as safe — or perhaps safer — than a human.
"It gets honked at more often because it's being safe," said Nevada DMV Director Bruce Breslow.
Self-driving vehicle technology works like auto-pilot to guide a car — in this case a modified Prius — with little or no intervention from a human operator. Laser radar mounted on the roof and in the grill detects pedestrians, cyclists and other vehicles, creating a virtual buffer zone around the obstacles that the car then avoids.
While some envision the robotic car dropping off its operator at the front of the mall and hunting for a parking spot on its own, Breslow said not so fast.
Nevada's regulations require two people in the test cars at all times. One person is behind the wheel, while the other person monitors a computer screen that shows the car's planned route and keeps tabs on roadway hazards and traffic lights.
If there's a glitch, the human driver can override the autonomous auto with a tap on the brake or a hand on the steering wheel.
Last summer, Nevada Gov. Brian Sandoval took the car for a spin in and around the state's quiet capital city. But Las Vegas Boulevard, where costumed superheroes routinely take the crosswalks and massive billboards angle for the attention of starry-eyed tourists, was perhaps best suited to test the car's main purpose.
"They're designed to avoid distracted driving," Breslow said. "When you're on the Strip and there's a huge truck with a three scantily clad women on the side, the car only sees a box."
So far, Google's applied to license three test vehicles. Breslow said the cars will display red plates and an infinity symbol to represent their status as vehicles of the future.
Once they're ready for the market — something Breslow guesses could come in three to five years — the plates will be green.
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