I think the colors could be switched - with WC2018 in former Soviet block and half of EU going bankrupt from overtaxation looking like circus of oddities
Those 'baby on board' signs aren't for other drivers, in the event of a crash they're to indicate to the emergency services that they should search for a baby in the wreckage, as they're easy to miss.
At least, they originally were, the baby-seat is kind of a giveaway these days.
... and drivers with (small) children tend to drive more leisurly (braking/accelerating smoother), plus might get distracted by the kids at traffic lights or whatever. I see those stickers more as a sort of excuse for whatever behavior in traffic, not as a request to not crash into this particular car
This year's championship is just a disgrace in terms of referees. It looks like someone paid too much for this to happen in almost EVERY match... Just a disgrace.