Hi,
I'm playing with multiple aspects of vehicle behaviour associated with parking.
It appears that when the parking/stopping period has ended and the vehicle is
trying to re-enter the net - ie engine is running - emissions are not computed
until the vehicle is actually on the road.
In my models this is significant because vehicles are often blocked from
entering the lane, by other vehicles, for many sim steps - equivalent to
5-10mins real time.
I don't pretend to understand the emission model yet, however I have been
looking at what seems a relatively simple way to get these emission values
output - this is what i did:
1) add a new flag - 'myTryingToEnter' to SUMOVehicle/MSVehicle etc.
paralleling the 'myAmOnNet' flag with associated get/set functions. (This could
equally be an 'engineStarted' flag if there was a more generic use case.)
2) change MSVehicleTransfer::checkInsertions line 127 to set this flag,
before the insertion check, and clear the flag, in the block after insertion
success.
3) change MSEmissionExport::write line 51 if (veh->isOnRoad()) {
to something like if (veh->isOnRoad() ||
veh->isTryingToEnterRoad() ) {
This seems to give me (idling) emission outputs with no obvious side effects
wrt my results or the test sets.
My questions are
a) Is this a sensible approach or is it likely to break something I don't
understand
b) If not please could you give me any pointers to implementing this
functionality.
cheers
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