I think it is about time people realised the origin of all those ridiculous "baby on board" signs (and such inevitable copy-cat idiocies as "mother-in-law in boot" and "rottweiler on board"). There ...

From the mid to late 1980s, the most ubiquitous road sign didn’t advise you to stop, obey the speed limit, or be mindful of crossing deer. Instead, it was diamond-shaped, used a black-on-yellow color ...