Signal Indications and Operating Rules

Vocabulary flashcards covering signal aspects, indications, and GCOR 9.4 based on the lecture transcript.

CLEAR (9.1.3)

Proceed.

APPROACH LIMITED (9.1.4)

Proceed prepared to pass next signal not exceeding $60\,\text{MPH}$ and be prepared to enter diverging route at prescribed speed.

APPROACH (9.1.8)

Proceed prepared to stop at next signal. Trains exceeding $30\,\text{MPH}$ immediately reduce to that speed. Note: Speed is $40\,\text{MPH}$ for passenger and trains in PTC Full Enforcement Mode.

APPROACH MEDIUM (9.1.6)

Proceed prepared to pass next signal not exceeding $40\,\text{MPH}$ and be prepared to enter diverging route at prescribed speed.

RESTRICTING (9.1.13)

Proceed at restricted speed.

STOP (9.1.15)

Stop.

DIVERGING APPROACH (9.1.12)

Proceed on diverging route not exceeding prescribed speed through turnout; approach next signal prepared to stop. Trains exceeding $30\,\text{MPH}$ immediately reduce to that speed. Note: Speed is $40\,\text{MPH}$ for passenger and trains in PTC Full Enforcement Mode.

APPROACH RESTRICTING (9.1.7)

Proceed prepared to pass next signal at restricted speed. Freight trains exceeding $30\,\text{MPH}$ immediately reduce to that speed. Note: Speed is $40\,\text{MPH}$ for freight trains in PTC Full Enforcement Mode.

DIVERGING APPROACH DIVERGING (9.1.10)

Proceed on diverging route not exceeding prescribed speed through turnout prepared to advance on diverging route at the next signal not exceeding prescribed speed through turnout.

Stop

Except as shown in block, cab, and interlocking signal aspects in the special instructions, regard an improperly displayed or absent signal as its most restrictive indication, unless governed by a visible semaphore arm.

Report it to the train dispatcher.

Reference: GCOR 9.4

Restrictiing

Except as shown in block, cab, and interlocking signal aspects in the special instructions, regard an improperly displayed or absent signal as its most restrictive indication, unless governed by a visible semaphore arm.

Report it to the train dispatcher.

Reference: GCOR 9.4

Advanced approach

Proceed prepared to pass next signal not exceeding 50 MPH and be prepared to enter diverging route at prescribed speed.

Reference: 9.1.5

Diverging clear

Proceed on diverging route not exceeding prescribed speed through turnout.

Reference: 9.1.9

Diverging approach medium

Proceed on diverging route not exceeding prescribed speed through turnout prepared to pass next signal not exceeding 35 MPH.

Note: Speed is 40 MPH for trains in PTC Full Enforcement Mode.

Reference: 9.1.11