The pie charts illustrate the proportion of income sources and their expenditure in various categories for the US highways at last year.
Overall, all the sources showed almost equal proportion of income except for motor vehicle taxes and tolls, and around half of the expenditure was covered in capital outlay compared to others.
Combining the highest categories of revenue, 26.5% from central government funds and 26% of motor fuel taxes, it dominated half of the total revenue. Similarly, almost the same percentage of money came from other fields (16.1%) and through bonds with 14.9%. The motor vehicle taxes contributed 12.2%, which was around half of the motor fuel taxes, and the figure of tolls recorded of merely 4.3%.
Approximately 70% of expenses incurred in capital outlay with 48.8% and 23.8% for maintenance and traffic services respectively, however, the lowest money was required for interest on debt with 4.7%. Bond retirement recorded almost 4 times less, only 6% of expenses compared to maintenance and traffic services. Almost same proportion noted in administration and highway petrol and safety with 7.9% and 8.8% respectively, making it 6 times lower expenditure than capital outlay utilization.