Mike D has very generously released a freeware model of some grade crossing Wig-wags, now, being British, and even though I have seen them in operation on various American TV programmes over the years, I just wanted to know from you knowledgeable folks if these are still in general use today, and if so, are they all over the country, or, just in a few select regions depending on the Railroad.
Thanks.

ex-railwayman.
i7 10700k 3.8GHz Eight Core CPU, Gigabyte Z590 AORUS ELITE AX, 32GB RAM, nVidia RTX3060ti 8GB, WIN10 PRO 64-bit. 10TB HDDs in total.