Does anyone happen to know of a supplier of fixtures, etc. to Diag. 4005 for an animal crossing. The sign plates aren’t an issue, but the large flashing orange heads are proving to be. Reason I ask is that I’ve a VERY old crossing on one of my roads and the farmer is looking to get it upgraded/refurbished.
I think these large amber ‘wig-wags’ are usually based upon a conventional signal head with the middle aspect removed. Therefore I suggest you try the traffic signal suppliers. All the well known ones are here: ARTSM members who supply signal equipment. If you still have difficulty you could email the ARTSM general secretary, Kealie Franklin.
Many older ones were indeed just a modified Mellor type signal head; I have seen LED variants but whether these are lawful or not in terms of design is up for debate. See this example here: https://goo.gl/maps/7nFGmEZuXPo