Roadsign with a silhouette of elderly couple by John Cliff. From OCAL 0.18 release 夫婦 老人 人民 道路標誌牌上寫的老人們
Highway sign for US Interstate Highways. Includes Red / Blue shield with INTERSTATE as included as both a font and as curves 藍色 公路 除 州際公路標誌
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 自行車 助力車 摩托車 沒有摩托車