sign一共是40个图标，大家只要记住这40个就可以了。我把能记下来的尽量都写上。
stop sign,yield sign,school zone sign,railway crossbuck sign,slippery when wet,stop sign ahead,school crosswalk,playground,no turns,no parking,no right turn in red signal,no U-turn,passing permitted,one-way sign,do not pass,do not enter,change in maximum speed limit ahead,keep to the right ,hazard warning,road narrows ahead,fire truck entrance,hidden intersection,steep decline ahead,bump road,divided highway ends,divided highway ahead,right curve ahead,narrow structure ahead,right lane ends,chevron(arrow),low clearance,merge,right turn only,two-way trafic,traffic control person,difference in elevation between the lanes,worker are active at the site,
反正就是40个里面挑选20个图形标出正确名字就可以了，20个里面可以错误4个以内就算图形通过了。
还有问答题也是选择20道，也可以错误4道以内算通过。
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，加分和感谢！
