If you’ve ever driven on an industrial plant site you most likely have noticed the speed limits on these sites is rather low, say 10 mph. However, some sites we have visited we have seen speed limits up in the 20 mph range. Now if there is no critical infrastructure in the area, we just look the other way and keep our mouths shut. But if we see speed limits over 10 mph right next to critical infrastructure such as pipe bridges, storage vessels, etc. we make a point to discuss an engineering concern.