Define states the traffic light needs to support

[Stoneshop]

• Self-Test
• Out of order
• About to change
• Go
• Stop
• Autonomous mode / Warning
• Off
• Disco

[Stoneshop]

The unit should support the following operating modes:

1. startup/selftest
2. standalone
3. paired with designated partner
4. paired with designated partner and communicating with central controller
5. auxiliary

Any operating mode change should go preferrably go only to the next higher or lower level.

Modes 1 and 2 should only show a primarily yellow indication (stationary or progress bar)
Modes 3 and 4 should show the 'normal' traffic light modes, with patterns that are distinguishable to color-blind people