Roadsign with a silhouette of elderly couple by John Cliff. From OCAL 0.18 release 夫妇 老人 人民 道路标志牌上写的老人们
Highway sign for US Interstate Highways. Includes Red / Blue shield with INTERSTATE as included as both a font and as curves 蓝色 公路 除 州际公路标志
Swedish Road Signs Collection on Wikicommons - URL http://commons.wikimedia.org/wiki/Category:Road_signs_of_Sweden information about why this image is in the public domain can be found there 自行车 助力车 摩托车 没有摩托车
Swedish Road Signs Collection on Wikicommons - URL http://commons.wikimedia.org/wiki/Category:Road_signs_of_Sweden information about why this image is in the public domain can be found there 汽车 距离 道路标志牌上写 50 米之间汽车标志