The other bytes in the resource appear to identify specifics about the world, and so will identify a specific world. However, Sims MX points out that there may be more to a city than just the traffic manager, so it may be worth while modding your world! Note: Twallan has made a mod to enable the traffic manager in non city worlds, you can get it HERE, if you would rather not mod your world. Alternatively, I have made a copy of this resource set to 01 00 00 00 00 00 02 00 00 00, download it HERE. If you wish to try this yourself you can obtain a copy of UNKN 0x296A6258 from any of the EA worlds except Sunset/ Riverview, and modify it yourself.
It is byte 06 that you will need to change if you wish to flag your world as a city- you will need to import UNKN 0x296A6258 and set it to 01 00 00 00 00 00 02 00 00 00.
00: Suburb (will have a suburb icon in the 'select a town' dialog)Ġ1: Vacation World (will not show in the 'select a town' dialog, and expects a base camp)Ġ2: City (will have a city icon in the 'select a town' dialog, and the traffic manager will yield fake taxis and work the food trucks)