Errata

I wish to correct two errors in my review of the Australian Road Research Board Third Conference, Sydney, 1966, which appeared in Transportation Science, 1, 32–46 (1967). In my comments on N. F. Clark's paper, “Some Benefits and Costs to Road Works and Their Relevance for Priority Decisions,” I incorrectly described his consumption benefits as social benefits. I am informed that his productive benefits are what economists know as social benefits. I have now found a mention of accident costs in the paper.