Costs of daytime trips separated by source (mean and 90% confidence intervals). Emission costs are not calculated for the passenger; ticket costs are not calculated for society. Driver costs with car may be negative, because some people prefer driving themselves. There are no time costs for cars in the figure, because it was estimated that there are no traffic jams in the default scenario (50% composite traffic).
Tuomisto and Tainio BMC Public Health 2005 5:123 doi:10.1186/1471-2458-5-123