Other sources of state transportation revenue include general fund appropriations, bond proceeds, inspection fees, driver license fees, advertising, rental car taxes, state lottery/gaming proceeds, oil company taxes, vehicle excise taxes, vehicle weight fees, investment income, and other licenses, permits, and fees.
AASHTO's 50-State Review of State Legislatures and Departments of Transportation report provides this information in great detail, and the BATIC Institute maintains an interactive map that illustrates a number of these other revenue sources by state using information from this report.