Human traffic lights ensure travel
<p><span word="Two">Two</span> <span word="men">men</span> <span word="took">took</span> <span word="on">on</span> <span word="the">the</span> <span word="job">job</span> <span word="of">of</span> <span word="human">human</span> <span word="traffic">traffic</span> <span word="signals">signals</span> <span word="at">at</span> <span word="an">an</span> <span word="intersection">intersection</span> <span word="in">in</span> <span word="Shijiazhuang">Shijiazhuang</span>, <span word="Hebei">Hebei</span> <span word="province">province</span>, <span word="when">when</span> <span word="the">the</span> <span word="electric">electric</span> <span word="traffic">traffic</span> <span word="signals">signals</span> <span word="broke">broke</span> <span word="down">down</span> <span word="and">and</span> <span word="several">several</span> <span word="traffic">traffic</span> <span word="accidents">accidents</span> <span word="occurred">occurred</span> <span word="over">over</span> <span word="the">the</span> <span word="past">past</span> <span word="month">month</span>. <span word="They">They</span> <span word="set">set</span> <span word="up">up</span> <span word="temporary">temporary</span> <span word="signals">signals</span> <span word="using">using</span> <span word="large">large</span> <span word="plastic">plastic</span> <span word="boards">boards</span> <span word="with">with</span> <span word="the">the</span> <span word="words">words</span> "<span word="stop">stop</span>" <span word="and">and</span> "<span word="go">go</span>", <span word="turning">turning</span> <span word="in">in</span> <span word="one">one</span> <span word="direction">direction</span> <span word="or">or</span> <span word="another">another</span> <span word="every">every</span> 30 <span word="seconds">seconds</span> <span word="to">to</span> <span word="aid">aid</span> <span word="drivers">drivers</span>. <span word="The">The</span> <span word="city">city</span> <span word="was">was</span> <span word="evaluating">evaluating</span> <span word="the">the</span> <span word="problem">problem</span> <span word="with">with</span> <span word="the">the</span> <span word="lights">lights</span> <span word="and">and</span> <span word="sent">sent</span> <span word="police">police</span> <span word="officers">officers</span> <span word="to">to</span> <span word="direct">direct</span> <span word="rush">rush</span>-<span word="hour">hour</span> <span word="traffic">traffic</span>.</p><p><span word="How">How</span> <span word="often">often</span> <span word="did">did</span> <span word="the">the</span> <span word="human">human</span> <span word="traffic">traffic</span> <span word="lights">lights</span> <span word="change">change</span> <span word="direction">direction</span>?</p><p><span word="A">A</span>. <span word="Every">Every</span> 20 <span word="seconds">seconds</span></p><p><span word="B">B</span>. <span word="Every">Every</span> 30 <span word="seconds">seconds</span></p><p><span word="C">C</span>. <span word="Every">Every</span> 40 <span word="seconds">seconds</span></p>
页:
[1]