An Integrated Metaheuristic Routing Method for Multiple-Block Warehouses with Ultranarrow Aisles and Access Restriction

Table 1

Detailed configurations of warehouse scenarios.

Layout scenario	Number of blocks	Number of cross aisles	Number of connect aisles	Front restriction	Back restriction
1	1	1	2	Yes	No
2	1	1	2	No	Yes
3	1	2	2	No	No
4	2	1	3	Yes	No
5	2	1	3	No	Yes
6	2	2	3	No	No
7	2	2	2	Yes	No
8	2	2	2	No	Yes
9	2	3	2	No	No
10	4	3	3	No	No
11	4	3	2	Yes	Yes
12	8	3	3	Yes	Yes