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SANDAG / ABM

Sandag ABM
https://github.com/SANDAG/ABM/wiki
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Fix TNC_SHARED mode share #148

Closed aber-sandag closed 1 month ago

aber-sandag commented 1 month ago

TNC_SHARED mode share in resident model is being overestimated in future years due to two issues.

TNC_SHARED trips are allowed in all tour types. To fix this, the RideHail_available condition used for TNC_SINGLE and TAXI will be applied to TNC_SHARED, restricting it to ridehail tours.

Joint tours overwhelmingly select TNC_SHARED over TNC_SINGLE. This appears to be caused by coefficients that were updated for TNC_SINGLE but not for TNC_SHARED during calibration. This PR updates two of these coefficients relevant for joint tours. There may be other TNC_SHARED coefficients that need to be updated, but hopefully these two will be enough to sufficiently resolve this issue.

Currently testing with 50% sample resident model

bhargavasana commented 1 month ago

50% sample resident model test shows TNC_SHARED mode share looks better. We at least have more TNC_SINGLE trips than TNC_SHARED overall now.