ME/2 transportation planning package (Spiess 1984, INRO 1996) in the form of a macro entitLED PARKRIDE. This macro uses the matrix convolution module of EMME/2 to implement the algebraic matrix multiplications (i.e. the sums) in (12), (14) and (15) and the matrix calculator module to compute all other (element by element) operations. For improved efficiency, only the first leg matrix is computed at each iteration of the algorithm. The second leg matrix needs only be computed once, at the very end of the algorithm. Furthermore, the macro allows the explicit specification of fixed impedance or disutility term for each parking lot, which e.g. can be used for representing parking costs.

The macro PARKRIDE is available via Internet on the Web site of the EMME/2 Support Center.

Conclusions

We have shown that the problem of a logit type intermediate destination choice for mixed mode trips can indeed be extended to include capacity constraints. The resulting model is ``well behaved'' in all important aspects: It has a consistent mathematical formulation, a solution algorithm which is known to produce an optimal solution and which can be (and has been) implemented efficiently even for large scale real-life applications.

References

1

Blain L. (1994). Park-and-Ride Choice using Matrix Convolutions. Paper presented at the 9th Annual International EMME/2 Users Group Conference, Montreal, Quebec.

2

Dehghani Y. and Gihring C. (19

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