The Washington Post
@washingtonpost
Democracy Dies in Darkness
加入 March 2007
1.6K 正在關注 19.3M 粉絲
Virginia high school students wanted to help their peers identify speedy and safe walking routes to school.
They developed SafeWalkr, which combines data from Google Maps and street databases to map crosswalks, traffic and sidewalk coverage.
顯示更多
