There is a yield sign at the intersection of Monte Sano Blvd and Hwy 431 that needs to be larger or have lights around it. People blow thru that yield when coming W from Hampton Cove and turning on to Monte Sano. Just the other day, when it was really foggy, I had the green turn arrow to turn onto Mpnte Sano. It was a good thing I hesitated, since a gray SUV came thru that "yield" going about 50 or 60 mph.I've seen this over and over again, and almost forget it's there myself. Maybe larger sign or lights would help.