[DrStalker]

I had to hunt the article to find that, since the first impression is just speed limit signs/traffic lights being out which is not major. (and plenty of posts here suggest other people thought the same thing)

The variable speed signs always have extra signs along the lines of "(80) if variable limit sign is disabled" as a fallback.

Not being able to handle leaks, fume buildup, fires and other emergency conditions is a completely different story.