Question for the audience:

I was driving home up Minot Avenue in Auburn this evening from my usual Thursday night hot spot, and this came to my attention:

Minot Ave has been being re-paved for the last few weeks, and it has been present in a tore up state since about July 1st..

They tear up road by running a magical machine over the top which strips up and grooves the top layers of asphalt before they lay two new coats of hot top over it and call it a "road" again (SIDENOTE: when they stripped Minot Ave...a gem of a road, already...there were quite a few spots where this aforementioned strippage didn't "quite" tear all the way down to old(er) asphalt, but left some of the already present potholes, too (therefore no adhesion for new hot top..well done..). I expect this "new" road to last less than five years. Anyways, I Love Auburn and Obama money!)

But while that's funny, it's neither here nore there. To make a long story short my question to you is this:

Once they laid down a new coat of hot top (this happened earlier this week..) they put two of the little plastic lane marker bastards that sick up and you drive over and they slap your tire in the color white to mark the lane lines (FYI: it's a two lane northbound and a two lane southbound road with no natural divider..), and put one of the plastic lane marker bastards that sick up and you drive over and they slap your tire in the color yellow to mark the median line (Another FYI: There's no turning lane. Just four lanes of hotly contested traffic..). Why would they do this, when, from first observation, it seems ass backwards?

Respond by comment with the correct answer ASAP for a prize, maybe even a pat on the back. I will post the correct answer by 5pm (ish..) Friday so let your cranium work while your at the office ending your week. Cheers.