A signal or light change

{
  "id": "signal_light_change",
  "category_id": "manifestation",
  "title": [
    {
      "locale": "en",
      "value": "A signal or light change"
    }
  ],
  "description": [
    {
      "locale": "en",
      "value": "The output changes what the environment tells you — a traffic light that adapts to flow, street lighting that brightens when people pass, a status light turning red. Subtle enough that most people never realize a system decided it."
    }
  ],
  "authoring_guidance": [],
  "examples": [],
  "sources": [],
  "symbol_id": "traffic_signal",
  "variables": [
    {
      "id": "additional_description",
      "label": [
        {
          "locale": "en",
          "value": "Description"
        }
      ],
      "required": false,
      "kind": "localized_text"
    }
  ],
  "shape": "hexagon",
  "icon_variants": [
    "default",
    "dark"
  ]
}