CR 1953 in Hinsdale, MA. on 5/17/80.

A grubby 1953 leads eastbound tonnage splitting the signals near MP 139 in Hinsdale, MA. on May 17, 1980. Note the white spots on the signal targets at right, these are sighting holes used to "line-sight" the signal heads so that engineers of oncoming trains see them clearly. They don't call this type of signal a "searchlight" for nothing. They project a relatively narrow beam, which is readily visible in a photograph of them taken at night with a little fog, so they have to be set correctly to "catch the eye".