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| Guideline layer | Element layer | User demand analysis | Technical indicator |
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| Transportation function (B1) | Fast departure at any time (C1) | Network to send ambulances; many available ambulances in hospitals | Network shared location (D1); large number of ambulances (D2) |
| Not affected by blockage (C2) | Narrow body to go through easily; short body to turn easily; short distance to ambulances | Length and width in line with micro-ambulance standards (D3); ambulances stopping at the nearest community hospital (D4) |
| Through the neighborhood narrow road (C3) | Narrow body to go through easily; short body to turn easily | Length and width in line with micro-ambulance standards (D3) |
| Timely arrival on site (C4) | Fast speed; close to the rescue point; low total weight | High vehicle driving force (D5); ambulances stopping at the nearest community hospital (D4); lightweight body structure (D6) |
| Driving stability and safety (C5) | Excellent driving stability | Large weight of the chassis (D7); strong performance of shock absorber (D8) |
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| Medical function (B2) | Emergency rescue function (C6) | Rescue at any time | More instruments/people within the vehicle (D9); appropriate medical cabin height (D10); convenient for the driver to get on and off (D11) |
| Medical evacuation function (C7) | Excellent driving stability | Large weight of the chassis (D7) |
| Critical care function (C8) | Rescue at any time; excellent driving stability | Spacious medical cabin (D12); large weight of the chassis (D7); more instruments/people within the vehicle (D9) |
| Health and epidemic prevention function (C9) | Prevention of airborne infection | Internal isolation space (D13) |
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| Appearance (B3) | Hospital remote control (C10) | Network to send ambulances | Installation of 5G network (D1) |
| Color matching harmony (C11) | Reasonably bright colors | Cold and warm colors in harmony (D14) |
| May provide a sense of security (C12) | Appearance with a sense of security; excellent driving stability | Rounded outer contour line (D15); strong performance of shock absorber (D8) |
| Vehicle scale aesthetics (C13) | Ergonomic fit | Low body chassis (D16) |
| Convenient for the elderly to board (C14) | Appropriate height; convenient for special people to board | Wheelchair lift structure (D17) |
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