According to the Tristate Transportation Authority, making certain improvements to the main commuter rail line would increase ridership dramatically. The authority plans to finance these improvements over the course of five years by raising automobile tolls on the two highway bridges along the route the rail line serves. Although the proposed improvements are indeed needed, the authority's plan for securing the necessary funds should be rejected because it would unfairly force drivers to absorb the entire cost of something from which they receive no benefit.

Which of the following, if true, would provide the authority with the strongest counter to the objection that its plan is unfair?

【选项】The roads along the route served by the rail line are highly congested and drivers benefit when commuters are diverted from congested roadways to mass transit.