Slow Stop or Go!

So I was on the 210 Freeway going Eastbound and I noticed this on an onramp.  Unfortunately I was already on the freeway and didn't have enough time to take the picture.  So I exited the next exit and went back on the 210 to take this photo.

I apolgize for the quality of the photo first off.  My piece of shit Motorola's camer takes shitty photos when the light isn't ideal.  That said, all the lights are on and I have never seen this before.  I have to remember to take my good camer when it rains.  You always get good pictures!