Individual variation and uncertainty in the cost of a composite trip. The cost of a composite trip is compared with a private car trip for an individual passenger. The estimates are for daytime trips with 50% composite fraction scenario. The trips are divided into two groups based on length (blue cross: <5 km; red plus: >= 5 km). The variation between individuals is shown on the X axis, with people most in favour of composite traffic on the left. The expected values across individuals are shown as lines, and the dots represent the uncertainty of the value.
Tuomisto and Tainio BMC Public Health 2005 5:123 doi:10.1186/1471-2458-5-123