The Dispatcher may add 'Additional line 2' authorities to Form D under the condition that no new trains or track cars have been authorized to operate within the limits. What does this action accomplish?

The Dispatcher may add 'Additional line 2' authorities to Form D under the condition that no new trains or track cars have been authorized to operate within the limits. What does this action accomplish?

• A. It cancels Form D
• B. It extends ABS/DCS rules
• C. It creates a new Form D
• D. It adds authorities to Form D

Answer: (D)

Form D is the dispatcher’s authority for movements within a defined track block, with the basic limits shown on line 1 and any extra permissions listed on line 2. When no new trains or track cars are authorized to operate within those limits, adding more line 2 authorities simply expands the permissions for the movements already covered by the Form D. It doesn’t cancel the form, it doesn’t create a new Form D, and it doesn’t modify ABS/DCS rules. The effect is to increase the authorities attached to the existing Form D, giving additional permissions within the same limits.

Form D is the dispatcher’s authority for movements within a defined track block, with the basic limits shown on line 1 and any extra permissions listed on line 2. When no new trains or track cars are authorized to operate within those limits, adding more line 2 authorities simply expands the permissions for the movements already covered by the Form D. It doesn’t cancel the form, it doesn’t create a new Form D, and it doesn’t modify ABS/DCS rules. The effect is to increase the authorities attached to the existing Form D, giving additional permissions within the same limits.