What is added to a 3 block 4 territory?

What is added to a 3 block 4 territory?

• A. Stop and Approach
• B. 100 code
• C. Approach medium 60 code
• D. Approach medium 120 code

Answer: (D)

When you expand a protected area by adding another block, you must provide an approach indication on the boundary to tell the train what speed to expect as it leaves the current territory and approaches the next signal. The appropriate addition for a four-territory boundary, given a three-block starting setup, is an Approach medium 120 code. This designation communicates a moderate approach speed that matches the length and protection needs of the extended boundary, giving the engineer ample time to react to the next signal while maintaining safety. The other options would either imply stopping at the next signal or specify a speed code that doesn’t align with the required protection for this boundary, so they don’t fit the scenario.

When you expand a protected area by adding another block, you must provide an approach indication on the boundary to tell the train what speed to expect as it leaves the current territory and approaches the next signal. The appropriate addition for a four-territory boundary, given a three-block starting setup, is an Approach medium 120 code. This designation communicates a moderate approach speed that matches the length and protection needs of the extended boundary, giving the engineer ample time to react to the next signal while maintaining safety. The other options would either imply stopping at the next signal or specify a speed code that doesn’t align with the required protection for this boundary, so they don’t fit the scenario.