Yet more public information films; this batch all comes from 1969. Here's Pelican Pedestrians, introducing the new pelican crossings.
Beware Fog tells people not to create smog by burning rubbish in foggy weather.
Finally, the similarly-themed Prevent Smog. This time, smog is personified as a sinister hooded figure - any relation to the Spirit of Dark and Lonely Water, I wonder?