Kill your speed and not our kids

I think this phrase is very clever and would love to have something similar in German which we could then hang over where our kids cross the road on their way to schoon and where too many drivers insist on driving 70 instead of the 50 permitted. (and yes where two little girls were seriously injured recently by such a driver)
Is there any play on words like the English possible
Runter mit Ihr Geschwindigkeit nicht mit unsere Kinder
doesn't seem to work and I cannot think of anything else.
Thanks in advance