What is a Signal, Dwarf?

What is a Signal, Dwarf?

• A. A large overhead signal.
• B. A handheld flag signal.
• C. A low interlocking or block signal.
• D. A signboard indicating speed limits.

Answer: (C)

Dwarf signals are the small, low-mounted trackside signals used at interlockings or in block sections to control train movement. They sit close to the ground or on short posts rather than up high, and their purpose is to convey the authority to proceed or stop within a controlled area, such as a block of track or an interlocking. This is why they’re described as low interlocking or block signals. They’re different from large overhead main signals, handheld flag signals, or speed-sign signs, which serve other roles in signaling or instruction.

Dwarf signals are the small, low-mounted trackside signals used at interlockings or in block sections to control train movement. They sit close to the ground or on short posts rather than up high, and their purpose is to convey the authority to proceed or stop within a controlled area, such as a block of track or an interlocking. This is why they’re described as low interlocking or block signals. They’re different from large overhead main signals, handheld flag signals, or speed-sign signs, which serve other roles in signaling or instruction.