Simulation/Output/Lane- or Edge-based Emissions Measures

The edge/lane based vehicular emission output writes absolute and normed values of vehicular pollutant emissions collected on edges or lanes. The absolute values hold the sum of each of the pollutants emitted on each edge/lane, the normed values give the values normed by the interval duration and the edge's/lane's length.

Please note, that each vehicle type in SUMO may belong to a certain emission class (see Definition of Vehicles, Vehicle Types, and Routes and Models/Emissions). When using the emissions output, you should assure your vehicles reflect a realistic population in the means of vehicle emission class distribution.

Edge-Based Emission Output
An edge-based emissions output is defined way within an additional file as following:

" type="emissions" freq="" file="" [excludeEmpty="true"]/>

Lane-Based Emission Output
A lane-based emissions output is defined way within an additional file as following:

" type="emissions" freq="" file="" [excludeEmpty="true"]/>

Omitting empty Edges/Lanes
17.07.2009: I have excluded computation of mean per-vehicle emission to pass a lane/edge though almost the same functionality is already covered by the "excludeEmpty"-attribute. I am not sure whether this makes sense.

Also, we maybe should then also decide whether or not this also should be done for travel time computation.

Value Range
17.07.2009: The values generated for absolute (..._abs) emission during the perion and for the mean per-vehicle emission to pass a lane/edge are now given in mg for making lower values visible though only digits after the dot are used. I am not really happy with the results. If a vehicle passes a lane of 390m length at 10m/s, it is assumed it emits less CO than 0.005mg so it does not appear in the outputs; On the other hand, if one looks at a jammed situation, the emissions of CO2 may climb up to CO_perVeh="21246834688.00" (sure, they would get inifite if the vehicle would be really standing). I suppose we have to evaluate how the system behaves.