CTS lunch seminar Nov 11, 11.30 by Sergio Jara-Díaz, Professor at Universidad de Chile
“OPTIMAL PRICING FOR TRAVELCARDS UNDER INCOME AND CAR OWNERSHIP INEQUITIES”
Sergio Jara-Díaz* Diego Cruz César Casanova
Travelcards are used in many parts of the world as a form of payment for public transport that is convenient for frequent users. In essence it involves a one-time payment at the beginning of a period that covers all trips within that period. Carbajo (1988) applies the two-part tariff approach to find the optimal (welfare maximizing) value for assuming a nil effect of T on the demand schedule of each and every individual (no income effect). Here we deal with an urban area where individual trips increase with income, but where car ownership – correlated with income – makes the public transport share diminish towards high income segments. A theoretical model is developed to find the optimal values (maximum social welfare with a budget constraint) for and, simultaneously, for a single ticket , considering the effect of on available income as well as differences across individuals regarding car ownership. The model is applied using parameters associated with monthly travel in Santiago, Chile, where both income and car ownership are highly concentrated and correlated. We obtain that the two richest segments choose to pay for the single ticket and the other eight choose to buy the travelcard. Sensitivity analysis regarding public transport quality, increased car ownership and poverty reduction show relatively marginal changes regarding optimal prices and preferred form of payment.
Please confirm your attendance by November 7th. No response is required for decline.
Lunch is served from 11:20.