| |
Match
User's Expectations
Control activation
should be as intuitive as possible and build upon the users' past
experience with the same or similar controls. The following table
provides commonly expected system function and control movement
relationships.*
System
Function |
Control
Movement |
| On |
Up,
right, forward, pull |
| Off |
Down,
left, rearward, push |
| Right |
Clockwise,
right |
| Left |
Counterclockwise,
left |
| Up |
Up,
rearward |
| Down |
Down,
forward |
| Increase |
Up,
right, forward, clockwise |
| Decrease |
Down,
left, rearward, counterclockwise |
|
* DOT,
Human Factors Design Guidelines, FHWA-RD-98-057.
|
|
