Bensalem Township
At the intersection of Oxford Valley Road at Levittown Parkway is this 3M left turn signal that has an old-school PennDOT configuration in place, where the red remains simultaneously lit with the two arrows. Photos taken by Ian Ligget
Next up, is a set of old 12″ Eagle flatbacks mounted at Mill Creek Road and Edgely Road, the doghouse is one of the oldest I’ve seen in person, although not the oldest doghouses out there, these were probably the oldest in the state. As far as I know, these 12″ Eagle flatback doghouses were installed at some point during the seventies. The intersection contains mostly three section R/Y/G heads, and a couple four sections.
Right around the corner, at the intersection of Bristol Oxford Valley Road, Bath Road, and Lakeland Avneue, are rather mixed set of signals. An Econolite Buttonback facing the southbound end of Bristol Oxford Valley Road, a TCT facing Bath Road. There’s also a short-fin eaglelux mounted on the side of one of the mast-arms too. The intersection is one of my favorites because it also contains two 12″ Eagle flatback doghouses. As far as I know, these 12″ Eagle flatback doghouses were installed at some point during the seventies.
The side-mounted signals in the intersection also include a rodded flatback (left) and an eaglelux (right), on opposite sides of the intersection:
Keystone State Traffic Signals 