Respondent trip frequency bias in on-board surveys.

Author(s)
Doxsey, L.B.
Year
Abstract

In this paper it is shown that on-board surveys are burdened with an inherent and serious sampling bias. The source and implications of this bias are presented, and a simple statistical correction procedure is developed. An example is used in which the bias leads to a 50 percent overestimate of average tripmaking by users and a 33 percent underestimate of the number of transit users in the population.

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Publication

Library number
C 11915 (In: C 11908 S) /72 / IRRD 281557
Source

In: Transportation forecasting : analysis and quantitative methods, Transportation Research Record TRR 944, p. 54-56, 3 ref.

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