Trip Records
Trip Records : Survey-derived trip information and related information. The data for each surveyed trip are recorded in one trip record (see trip). Comprehensive surveys, depending on the degree of detail required, can produce the following types of trip records: (1) Dwelling unit summary: a summary of trips and related information regarding the occupants of one dwelling unit. (2) External trip record: contains the information describing one trip by a vehicle that has crossed the external cordon line. (3) Internal trip record: contains information describing one trip by a resident of the survey area, and also contains certain information regarding the person making the trip. (4) Truck trip record: contains the information describing one trip by a truck registered or garaged in the survey area
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