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Table 1 Generic scenario variables
From: An analytical model for vehicle miles traveled and carbon emissions for goods delivery scenarios
Variable | Tree terminology | Logistics terminology | Example(s) |
|---|---|---|---|
i | Level number i | Facility type | Regional warehouse, local depot, customer homes |
n | Total count of levels | Total count of facility types | n = 3 for a scenario including regional warehouse, local depots, and customer homes |
N i | Count of descendants at level i | Count of vehicle trips from facility type i to facility type i + 1 | Number of vehicle trips from local depots to customer homes |
ti | Mean distance from parent vertices in level i to the children in level i + 1 | Mean route distance for vehicle trips from facility type i to facility type i + 1 | Mean round trip distance from customer home to local depot |