{
  "project": "gpu-pilot",
  "doc": "MULTIMODAL.md",
  "title": "Multi-Modal Access & Egress",
  "oneline": "Kiss&Ride, Uber, Citi Bike, Park&Ride \u2014 first/last-mile legs + a cost model around the unchanged kernel.",
  "tldr": [
    "Access/egress are a LEG LAYER; the kernel is unchanged \u2014 a drive leg is one more (origin, stop, seconds) Round-0 seed, egress is computed post-kernel.",
    "Egress changes the answer: a Citi Bike makes the Edison\u219299 Wall St PATH option joint-fastest (74 min, ~$16), erasing its 1.1 km WTC walk.",
    "Validates ground truth: 08854\u219210001 lands at 77 min (in the 67-78 band) via K&R/Uber Edison + every Metropark option, one kernel pass (multi-source).",
    "P&R Edison shows 98 min \u2014 correctly, not a bug: parking overhead misses the train K&R catches (exact-schedule fidelity; a range query smooths it).",
    "Cost = out-of-pocket + value-of-time($18/hr) \u00d7 effective minutes; drive-all-the-way is faster but ~4\u00d7 the cost. Fares are ESTIMATES pending Fares v2.",
    "Live data: OSRM drive at 172.26.1.151:5002 (geo2 by IP), Citi Bike GBFS 2,411 docks as the availability gate."
  ],
  "updated": "2026-06-11 20:48",
  "sections": [
    {
      "level": 1,
      "title": "Multi-Modal Access & Egress \u2014 Kiss&Ride, Uber, Bikes, Park&Ride"
    },
    {
      "level": 2,
      "title": "The one idea"
    },
    {
      "level": 2,
      "title": "Scenario A \u2014 EGRESS: Edison \u2192 99 Wall St (the two options, real last mile)"
    },
    {
      "level": 2,
      "title": "Scenario B \u2014 ACCESS: 08854 Piscataway \u2192 10001 NY Penn (ground-truth pair)"
    },
    {
      "level": 2,
      "title": "Cost model (all ESTIMATES \u2014 Phase E / GTFS Fares v2 replaces the constants)"
    },
    {
      "level": 2,
      "title": "Caveats / next"
    }
  ],
  "stats": {
    "lines": 116,
    "words": 1055
  },
  "html": "https://board.certihomes.com/project-docs/gpu-pilot/MULTIMODAL.html",
  "out_name": "MULTIMODAL.md",
  "comments_api": "https://board.certihomes.com/api/doc-comments?project=gpu-pilot&doc=MULTIMODAL.md"
}