Dust Control Sign

We live off a dirt road. In the summer months when it's dry, we get a lot of dust from cars that like to speed down our road yielding a cloud of dust on ours and neighbor's properties. I made this sign and mounted to telephone poles at each end of the road near homes. Some have ignored but a few drivers have slowed done improving the situation. This is a simple no-support print that requires a color change at layer 22 from yellow to black. I liked Bambu's sunflower yellow for the background. My profile is for PLA however PETG might be a better choice for the outdoor environment.