| OCR Text |
Show 27 2. Creation of an origin-destination trip table After a mode choice and before a trip assignment, production-attraction format of trip table should be converted into origin-destination format to get actual directions of trips. Production-attraction format of trips expresses the directions going from home-end of the trip (production) to non-home end of the trip (attraction). That doesn't reflect the real directions from origin to destination. The method to convert production-attraction trip tables into origin-destination trip tables is to add one-half of the trip table to one-half of the transposed trip table. In Tranplan, this conversion is performed by a "matrix transpose" function and applied to home-based trips ranging from trip purpose 1 to trip purpose 4. Non-home-based trips have origin-destination direction by definition. These home-based and non-home-based trips in OD format were combined into one table by using the function of "Matrix Manipulate." |
