Indivisibilities, Economies of Scale, and Optimal Subsidy Policy for Freeways
量化了考虑车道不可分性时高速公路的最优拥堵收费、容量比和补贴，发现忽略不可分性会导致政策偏差，对交通规划者和政策制定者有参考价值。
In our 1976 paper, Herbert Mohring, Thomas Pinfold and I attempted to quantify optimal congestion tolls, volume/ capacity ratios, and subsidies for freeways. In doing so, we made the simplifying assumption of perfectly divisible traffic lanes. Of course, freeway lanes are not divisible, and with two to four lanes typically provided in each direction, the size of the indivisibility is large. This paper quantifies optimal freeway characteristics with indivisibilities taken into account. We find that failure to account for indivisibilities can lead to