Business consultantrail advocate trucks operate on publicly financed highways. however, freight railroad companies pay nearly all costs related to their tracks, bridges, and tunnels. from 1980 to 2009, railroads reinvested approximately €325 billion (where 1 billion = 1,000,000,000) of their own funds—approximately 30 percent of their total revenue—to maintain and improve their tracks and machinery. to reduce this disparity, we propose tax incentives for any project that expands freight rail capacity. the benefits to the public of such incentives would far exceed their cost. railroads are more fuel efficient than trucks. for example, shifting 10 percent of the long-distance freight that currently moves only by truck to rail instead would save 4 billion liters of fuel per year. in addition to their better fuel economy, using railroads reduce roadway congestion. for each of the following questions about the freight railroad companies mentioned in the tabs, select can be determined if it can be answered solely on the basis of the information provided. otherwise, select cannot be determined. can be determined cannot be determined what percentage of their revenue did freight railroad companies spend to maintain tracks and machinery from 1980 to 2009? on average, do freight railroad companies buy more fuel per year than freight trucking companies do? approximately how much revenue did freight railroad companies take in from 1980 to 2009?