Before adjusting the assigned materials and mapping textures, determine what real-world surface qualities each part of the ambulance should strive to replicate. A suggested list of qualities is included in Table 5.3.
Table 5.3 Ambulance parts and suggested real-world surface qualities
| AMBULANCE PART(S) | SURFACE QUALITY |
| Body | White-painted metal with red-painted cross logo on each side; dirt near wheel wells |
| Frame (with springs, axles, driveshaft, and steering components) | Semigloss black paint covered with scratches, rust spots, and caked-on dirt |
| Rims | White-painted steel with scratches and caked-on dirt |
| Tires | Semiworn rubber with raised markings and caked-on dirt |
| Lights | Glass lenses (either clear ... |
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