Joe, this cable is commonly used by the Traffic Signal industry, and is called IMSA 19-1 (International Municpial Siganl Association, 19-1 is the cable spec).
It is a five conductor cable
Black-spare, sometimes used in ped signals
Signal heads typically don't have a seperate equipment groudning conductor, but the mast arms are often connected to an EGD.
Many companies make a 19-1 cable, but I don't think a much of it is listed. I'm going to check on this. In fact very, very, little traffic signal equipment is listed. This causes problems with installations where the AHJ gets involved.
I'm a certified Traffic Signal Tech and have been writing a "Code Corner" column in the IMSA Journal for the 18 months.