Final answer:
True, the Post Usage discount plan is generally calculated based on the total monthly expenditure on all transponders associated with a business account, particularly when the account specifies vehicles with 5 or more axles.
Step-by-step explanation:
The statement in the student's question is True. The Post Usage discount plan for tolls is typically calculated based on the total monthly expenditure for all the transponders that are registered to a specific business account. When all transponders are used by vehicles with 5 or more axles, certain toll authorities or agencies provide volume discounts or plans based on the total toll incurred by these vehicles across the entire business account. This means the more the vehicles travel and the more tolls they pay in a month, the potential for a higher discount rate increases, owing to higher cumulative expenditure.