NellsChoo wrote:Hmmm... so there is indeed a human at the Waltham tower? I had heard this, but don't understand why. There are no freight customers around there anymore, and just MBTA track, so why have a man there? Ayer I can see, but why Waltham as well?
I guess I'm just too young to understand the towers' uses...
JD
Towers are used to control switches and signals in a specific area. Waltham is the last working tower on the former B&M. I'm not sure of the reason, but I believe the operator there controls the Fitchburg Route between Swift Interlocking and CPF-WL. One factor that may be important is the grade crossings at Waltham itself. The crossing signals probably can be controlled from the tower, so if there's a problem, the operator can deal directly with it. It's also where the route goes from double to single track and back again. The Waltham operator controls switches and signals and routes trains and issues From D's under the authority of the MBCR Boston West Dispatcher. He would have a board or computer screen showing the track diagram for his territory and the signals and switches under his control.
When Ayer was operational it controlled the signals and interlockings between Ayer and what was known as Willows East, at North Littleton. Before 1980 the interlocking at Ayer also extended west of the tower to where the current Moore's Crossovers are now.