> ## Documentation Index
> Fetch the complete documentation index at: https://sdocs.netransit.net/llms.txt
> Use this file to discover all available pages before exploring further.

# Supervisor FPIU Controls

> Controls for lights and other mechanics with the 2018 and 2020 FPIU supervisor vehicles.

| Mechanic    | Key |
| ----------- | --- |
| ELS         | J   |
| Cruise      | U   |
| Takedowns   | V   |
| Left Alley  | B   |
| Right Alley | N   |
| Killswitch  | ,   |
| Wail        | R   |
| Yelp        | T   |
| Phaser      | G   |
| Hi-Lo       | Y   |
| Airhorn     | H   |
| Manual      | F   |