Back to comment: You choose a tough time of day to shot this image. The bright sky and dark subject don't really work well together. Using fill flash for the sign might have helped. I also think that it is hard to relate the sign to safety because the road construction it is protecting you from is not really visible in the background.
The light is a wee bit off, I like the idea but I think maybe shooting this earlier in the day would've been better; the evening sky looks a bit bright and it makes the foreground of the photo look dim.