Figure 2.

Composite traffic trips by vehicle type as a function of time. The fraction of composite trips (composite fraction) is 50% of the current 1.3 million personal car trips per day. Note that a trip with a transfer is calculated as two half-trips and may appear in two different vehicle types.

Tuomisto and Tainio BMC Public Health 2005 5:123   doi:10.1186/1471-2458-5-123
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