Greenville in Mercer County, Pennsylvania — The American Northeast (Mid-Atlantic)

Dwarf Signal Light

Photographed By Cosmos Mariner, June 15, 2021

1. Dwarf Signal Light Marker

(looking down on dwarf signal light from above)

Inscription. This is a dwarf signal light which was used to control train movements. It’s a smaller and cheaper version of our taller signal lights. These would be used in slow speed and restricted clearance areas such as yards or in industries.

This signal came off of the Erie Railroad.
Donated by Conrail Railroad

Topics. This historical marker is listed in these topic lists: Communications • Railroads & Streetcars.

Location. 41° 24.461′ N, 80° 22.894′ W. Marker is in Greenville, Pennsylvania, in Mercer County. Marker can be reached from the intersection of Main Street (Pennsylvania Route 358) and Union Street, on the right when traveling west. Dwarf signal light and marker are located on the Greenville Railroad Park & Museum grounds. Marker is mounted directly on top of the dwarf signal light - near ground level. Touch for map. Marker is at or near this postal address: 314 Main Street, Greenville PA 16125, United States of America. Touch for directions.

Other nearby markers. At least 8 other markers are within walking distance of this marker. Whistle Post (here, next to this marker); Phone Box (here, next to this marker); Mile Post (here, next to this marker); Semaphore Signal (here, next to this marker); Steam Engine #304/604 (a few steps from this marker); Wheeling & Lake Erie Caboose #0205

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(a few steps from this marker); The Chicago Bridge & Iron Company (a few steps from this marker); Bessemer Ore Jenny #20567 (a few steps from this marker). Touch for a list and map of all markers in Greenville.

Related markers. Click here for a list of markers that are related to this marker. Greenville Railroad Park & Museum

Also see . . . North American Railroad Signals.

Dwarf signals are smaller signals used in low speed or restricted clearance areas. Most signaling aspect systems have a parallel set of aspects for use with dwarf signals that differ from aspects used in high signals. Dwarf signals may have multiple heads just like a high signal, but sometimes dwarf signals use so-called "virtual heads" to save on space and cost. This is where a dwarf signal displays multiple lamps on what would ordinarily be a single signal head creating the effect of multiple signal heads.

(Submitted on February 2, 2022, by Cosmos Mariner of Cape Canaveral, Florida.)

Dwarf Signal Light (<i>side view</i>) image. Click for full size.

Photographed By Cosmos Mariner, June 15, 2021

2. Dwarf Signal Light (side view)

(marker is visible, edge-on, on top of signal light housing)

Dwarf Signal Light (<i>front view</i>) image. Click for full size.

Photographed By Cosmos Mariner, June 15, 2021

3. Dwarf Signal Light (front view)

Credits. This page was last revised on February 3, 2022. It was originally submitted on February 1, 2022, by Cosmos Mariner of Cape Canaveral, Florida. This page has been viewed 230 times since then and 21 times this year. Photos: 1, 2, 3. submitted on February 2, 2022, by Cosmos Mariner of Cape Canaveral, Florida.