Motorway Services Online uses categories to power searches and other functions The following categories exist. We also have a list of wanted categories (categories which have been used but don't actually exist).

• A177 (2 members)
• A17 pictures (119 members)
• A180 (2 members)
• A180 pictures (30 members)
• A19 (7 members)
• A19/A168 (8 members)
• A19 pictures (167 members)
• A1 (Great Britain) pictures (569 members)
• A1 (Northern Ireland) (3 members)
• A1 (Northern Ireland) pictures (2 members)
• A1 pictures (417 members)
• A2 (8 members)
• A20 (4 members)
• A20 pictures (13 members)
• A21 (2 members)
• A22 (3 members)
• A229 (1 member)
• A22 pictures (70 members)
• A23 (6 members)
• A23 pictures (104 members)
• A24 (4 members)
• A249 (3 members)
• A249 pictures (38 members)
• A24 pictures (28 members)
• A256 (1 member)
• A259 (2 members)
• A264 (1 member)
• A27 (8 members)
• A272 (2 members)
• A27 pictures (175 members)
• A282 (1 member)
• A289 (1 member)
• A29 (1 member)
• A299 (2 members)
• A299 pictures (51 members)
• A2 pictures (105 members)
• A3 (4 members)
• A30 (14 members)
• A303 (17 members)
• A303 pictures (531 members)
• A30 pictures (365 members)
• A31 (8 members)
• A31/A35 (8 members)
• A31 pictures (124 members)
• A325 (1 member)
• A33 (1 member)
• A339 (1 member)
• A34 (10 members)
• A34 pictures (430 members)
• A35 (1 member)