For most things, I'd say to leave them alone.
However, if they want to run their buggies on the public roads, they are subject to the same laws as the rest of us.
There aren't a lot of street lights in the PA countryside, the buggies are black and the horses dark brown.
In the heavily Amish areas, there are almost no lights (no electric, no indoor plumbing, etc.)... which makes it really dark on the country roads -- which is what most of PA is.
If this is a religious issue to them, they should follow their convictions to the logical conclusion and stay off the public roads.... which were made by machines and have reflectors.
If I am not mistaken, Pennsylvania law states that motor vehicles are to yield right of way to horse drawn buggies and that the operators have to conceal the vehicle off th roads with whatever means necessary so as to not spook the horses.
---max
I grew up in Central PA, lost of Amish, and I agree with you. Don't get me wrong, I have much respect for the Amish and love to see them out and about, their buggies don't bother me one bit, but if they are using public roads, they should be required to obey traffic laws for their own safety. Many Amish groups have no problem doing such - I have seen plenty of orange triangles on backs of buggies. It is the ultra-conservatives that are having a hard time with this.
They are by and large great people. When I was growing up, the neighbor of close friends to my parents lost his barn in a fire and within a week, the Amish did for their non-Amish neighbor what they do for each other - raised him a new one in a day.
But sorry, Amish. Please use the triangle. Those PA back roads can be dark and windy.