{
  "node_id": "us-fmvss-126-electronic-stability-control",
  "title": "FMVSS No. 126 Electronic Stability Control (49 CFR 571.126)",
  "domain": "Automotive & Mobility",
  "version": "1.0.0",
  "last_updated": "2026-06-26",
  "bluf": "FMVSS No. 126 (Section 571.126) requires Electronic Stability Control (ESC) systems on passenger cars, multipurpose passenger vehicles, trucks, and buses with a GVWR of 4,536 kg (10,000 lb) or less. Per S5.1.1 the ESC must apply brake torques individually to all four wheels under a control algorithm, and per S5.1.2 must be operational across all driving phases except below 20 km/h, in reverse, or during initialization. Stability is demonstrated against the yaw-rate criteria of S5.2 using the Sine with Dwell test in S7.9.",
  "paywall": {
    "status": "LOCKED",
    "unlock_cost_usd": "0.01",
    "skyfire_id": "41779894-ece2-4163-9761-b3b1b76e19b0"
  },
  "crosswalks": {
    "_available_keys": [
      "nist_framework",
      "iso_standard",
      "industry_mapping",
      "ai_overlay_2026"
    ],
    "_note": "Full crosswalk values included in vault response"
  },
  "dependencies": [
    "us-nhtsa-fmvss-federal-motor-vehicle-safety-standards-49-cfr-571"
  ],
  "primary_citations_count": 7
}