| In a warm climate | |
| In all climates | |
| In a tropical climate | |
| In a cold climate |
| Must be mechanical brakes | |
| Can only be air brakes | |
| Are not required | |
| Must be a combination of mechanical and air brakes |
| Can still be used several times | |
| Can be used indefinitely | |
| Immediately fail | |
| Cannot be used |