D5 Annex report WP 3: ETIS Database methodology ... - ETIS plus

D5 Annex WP 3: DATABASE METHODOLOGY AND DATABASE USER
MANUAL – FREIGHT TRANSPORT DEMAND
Variable definition
Variable computation method
Directly from a database or agreed
classifications/nomenclatures
Output of
the model
Method variable V1
Method variable V2
Method variable V3
Method variable V4
Method variable V5
Method variable V6
Method variable V7
Method variable V8
Method variable V9
Method variable V10
Method variable V11
Method variable V12
E total= Total emissions
E hot= Hot running emissions
e= the hot emission factor (in g/km)
m= the activity, in distance travelled per time unit
(usually in km/year)
n= is the number of vehicles in each category
l= is the average distance travelled by the average
vehicle of each category over the time unit (in
km/year)
ec= the corrected hot emission / consumption factor for the
vehicle fleet, in consideration of the influence of gradient
and in the case of catalyst vehicles of mileage
i=the number of vehicle categories
v=the road type, practically signifying the mean
speed
k=the number of pollutants
s= the gradient class
x= the number of gradient classes
Document2
27 May 2004
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