Bus wraps and ads have to follow the following criteria:
The Texture needs to be a 24- or 32-bit .tga texture on a scale of Power of 2 (1024x1024 2048x2048, 4096x4096 etc.)
The Texture needs to follow a set UV layout that is largely the same for most Buses. The Reference images can be downloaded for testing.
The "Driver Side" is layed out upside down to facilitate a seamless blend between the driver side, the top and the door side. (see sample below for reference)
Not all busses are able to use the area seamlessly, so take into account that there may be some cutoffs on some buses.
Bendy Buses use the exact same layout and thus may have overlapping parts, in such cases a second texture should be provided for both parts to avoid this sort of duplication.
Resolution and Cropping
Due to the way the UVs are layouted the Front and rear may have a slightly higher spatial resolution than the sides
Details towards the bottom of the two side areas may be cut off, to compensate for stretching that would otherwise occur. (see sample below for reference)