Traffic Light 02 — Manual Red/Yellow/Green

Briefing

Wire three switches straight to the North-South lamps. No timing yet — just direct control, to prove you can drive each lamp independently before automating the sequence. All three lamps can be on at once here — that's expected; the interlock comes in later stages.

Objectives

• RED_SW controls NS_RED independently
• YEL_SW controls NS_YEL independently
• GRN_SW controls NS_GRN independently

I/O Table

Your program will be tested against:

All test cases run automatically when you submit. Assertions are hidden until you pass.

1. #1Each switch drives its own lamp

   Flipping a switch lights only its matching lamp; all three can be on together

2. #2All switches off → all lamps off

   Releasing every switch turns off every lamp