Travel Demand Model - OKI

2.4 External Cordon Survey – Consolidated InternalsThis file contains cordon survey data for all stations located in the boundary between the OKIregion and Montgomery County, and between Miami and Montgomery Counties. In theconsolidated zone system (also referred to as the 2000 zone system), these stations are“internal” locations to the consolidated region. Trips surveyed at these stations may be internalinternaltrips, internal-external trips, or external-external trips. Fields identified as created byODOT are the original cordon survey data. These fields identify stations, TAZs and ESNs usingthe original (i.e., pre-consolidated) zone system, as indicated in the ODOT Cordon Surveydocumentation (also referred as the 1995 zone system). Fields identified as created by PB wereadded in the process of re-geocoding the trip end data to the consolidated zone system. Pleasesee Part III, Trip Generation, of the Model Development Report for information on the regeocodingprocess. Please see the ODOT Cordon Survey documentation (ODOT Office ofTechnical Services, attn. Greg Giaimo) for information on the original cordon survey.Table 2-7 External Cordon Survey, Consolidated Internal Stations FilenamesSurvey Filename FormatCordon Survey, Consolidated Internals NotCons_Fixed.DAT TEXTTable 2-8 External Cordon Survey, Consolidated Internal Stations Data Dictionarysurvey createdvariable bydescriptionvaluesd_rPBuniqueid PB Region+Station+Serial_Nregion PB Planning region 1 OKI2 Mon/Gre Co.3 Miami Co.survdir PB Survey direction inboundoutboundspc_xinternal trip end latitude (wrt 1995 zone system)spc_yinternal trip end longitude (wrt 1995 zone system)serial_n ODOT Individual serial number (unique within survey location)station ODOT Station number (ODOT numbering system)time ODOT Hour survey was conducted (in military time)taz ODOT Traffic analysis zone geocoded for IE trips (1995 zone system)esn ODOT External station geocoded for EE trips (1995 zone system)hfac ODOT Hourly expansion factordfac ODOT Daily expansion factorofac ODOT Opposite direction expansion factorbfac ODOT Through/local bias factorafac ODOT Seasonal expansion factorocc ODOT Vehicle occupancytype ODOT Vehicle type 1 car2 truckpurp ODOT Trip Purpose 1 work2 school3 shop4 social/rec5 othercomm ODOT Commodity carried by trucks14