USEPA / EPA_MOVES_Model

Estimating emissions for mobile sources
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HotellingHoursPerDay table is ignored if there is 0 VMT on restricted access road types #41

Closed danielbizercox closed 2 years ago

danielbizercox commented 2 years ago

At county scale, if the optional input HotellingHoursPerDay is supplied, along with a road type distribution that puts 0 VMT on roadTypeIDs 2 and 4, MOVES will ignore the user input and calculate 0 hotelling hours.

MOVES uses long-haul combination truck VMT on restricted access road types as a surrogate for hotelling activity. It always calculates default hotelling activity first, and then scales this activity if the user supplies local hotelling data. This design allows users to only supply individual dimensions of hotelling activity (such as just the number of hours, or just adjust monthly differences) without having to supply the full amount of detail that MOVES uses in its calculations.

However, if the default hotelling calculations result in 0 hotelling hours, then scaling those results to match the user input fails.

This will be fixed in MOVES3.0.3. Until we release this patch, a workaround for users that wish to provide local hotelling data for counties without restricted access roads is to provide a very small amount of VMT on restricted access roads (such as 0.00001). This will allow MOVES to calculate the default distributions without significantly impacting the results.