Integrated Inventory Routing Problem with Quality Time Windows and Loading Cost for Deteriorating Items under Discrete Time

Table 10

Results of different intervals of vehicles’ returning time 𝑖𝑡𝑣.

𝑖𝑡𝑣	Driving distance	Retailers’ cost	Supplier’s cost; (production periods)	Transportation cost	Cost of time interval penalty	Total cost
0	437	2305.27	3089.56 (1, 3, 5)	1797.19	0	7192.02
0.3	449.4	2300.3	3091.92 (1, 4, 6)	1817.48	195	7404.7
0.5	441.9	2311.17	3125.97 (1, 4, 6)	1804.09	220	7461.23
0.8	455.5	2357.68	3101.55 (1, 4, 6)	1842.53	265	7566.76
1	439.4	2347.04	3126.83 (1, 4, 6)	1819.26	255	7548.13
1.2	457.9	2344.8	3146.67 (1, 4, 6)	1827.35	225	7543.82
1.5	438.3	2366.42	3083.49 (1, 3, 5)	1805.22	280	7535.13
2	450.8	2340.47	3138.86 (1, 4, 6)	1815.84	260	7555.17