jerryinva
It may have been the Sandy Carroll chimes...but the tones sounded a tad higher pitched...
It was on the opposite side of the Metro Center platform from me...what caught my ear was the noise from the big metal cases...what caught my eye then, was the fact that there were only two cars on the platform...the rest trailed off the platform...
I have never mentioned in the past where the revenue carts were stored in the stations for security reasons and because the question never specifically came up.
The reason why the cars were off the platform is because the revenue carts are stored in the locked cabinets off the ends of the platforms adjacent to or under the fire equipment cabinets in the station built prior to the late 1980s, later station store the revenue carts in locked rooms off the ends of the platforms.
There are gates in the safety railing along the tunnel walkway to allow the carts to be rolled off or on the train directly into the revenue collection cabinets/rooms.
You can see the revenue collection cabinets under the fire equipment cabinets at the in the Cheverly station in these Microsoft Live Search Maps birds eye view pictures,
outbound platform and
inbound platform
John in the sand box of Maryland's eastern shore.