John Semmens worked for the Arizona Department of Transportation (AzDOT) for 32 years. He has authored over 300 articles on transportation issues and was a contributing author to the award-winning book Street Smart: Competition, Entrepreneurship, and the Future of Roads, published by the Independent Institute. He is currently available for transportation consulting work. Send him mail.
Ludwig von Mises: "Monetary calculation and cost accounting constitute the most important intellectual tool of the capitalist entrepreneur, and it was no one less than Goethe who pronounced the system of double-entry bookkeeping one of the finest inventions of the human mind." - Liberalism