Like it's been said, the road was built in two sections. That's why it split like that. As far as the yellow paint goes, it's brand new. They painted on both sides of the split with bran new yellow paint. It used to be white. Take a look at the larger photo, and you'll see.

http://i.dailymail.co.uk/i/pix/2011/03/11/article-1365318-0D92D24D000005DC-318_964x591.jpg