A Hybrid Tabu Search Algorithm for a Real-World Open Vehicle Routing Problem Involving Fuel Consumption Constraints

Table 2

Specific parameters for different vehicle types.

Notation	Description	Light duty	Medium duty	Heavy duty
	Curb weight (kg)	3500	5500	14,000
	Maximum payload (kg)	4000	12,500	26,000
	Engine friction factor (kj/rev/liter)	0.25	0.20	0.15
	Engine speed (rev/s)	38.34	36.67	30.0
	Engine displacement (liter)	4.5	6.9	10.5
	Coefficient of aerodynamics drag	0.6	0.7	0.9
	Frontal surface area (m^2)	7.0	8.0	10.0