Within ABS Yard Limits, after passing a signal displaying Approach, how must your train be operated?

• A. Restricted speed.
• B. Proceed at normal track speed if the signal is favorable.
• C. Restricted speed unless a signal is more favorable than approach.
• D. Stop and wait for instruction.

Answer: (C)

When you’re inside ABS Yard Limits and you pass an Approach signal, you must drop to restricted speed. The Approach indication is a warning to be prepared to stop at the next signal, so you move with enough caution to be able to stop if needed. You keep at restricted speed until you reach a signal that is more favorable than the approach, at which point you may proceed under the indication of that next signal. If the next signal isn’t more favorable, you stay at restricted speed and continue to be prepared to stop.

So the rule is to operate at restricted speed after an Approach, unless the upcoming signal offers a more favorable indication. Moving at normal track speed would ignore the protection the Approach provides, and stopping and waiting isn’t needed when a signal ahead permits continuing under its indication.