Regulatory and Advisory Signs
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Drivers are often confused about the difference between a regulatory sign and an advisory sign. A regulatory sign generally has black characters or symbols on a white background and an advisory sign has black characters or symbols on a yellow background. So, what's the difference?

I was asked to comment on an interesting "exchange of views" on Facebook regarding a no left turn sign posted by the Delta School District at Richardson Elementary School. It began as a discussion about whether a driver had to obey the sign or not and then deteriorated into less than respectful exchanges.
Here's a document from the US Federal Highway Authority that looks at the
Question: I am confused by this sign on Pandora Avenue in Victoria that seems to indicate no pedestrian crossing to vehicle traffic yet there is nothing to tell the pedestrian not to cross the street here. There is even a wheelchair ramp encouraging pedestrians to cross. I suspect that there are more examples of this in the area. Can you explain what that sign means?
This video from Minnesota's Local Road Research Board explains why specialty warning signs often requested by the public to solve a perceived problem can actually make the problem worse instead of better. In fact, it can spread the problem as people learn to ignore these signs as just more background noise.