# ECP brakes.

**Citation:** 49 CFR 179.102-10  
**Type / status:** regulation / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2017-10-01  
**Published:** Not stated

(a) By January 1, 2021, each rail carrier operating a high-hazard flammable unit train as defined in § 171.8, comprised of at least one tank car loaded with a Packing Group I material must ensure the train meets the ECP braking capability requirements as prescribed in § 174.310 of this subchapter.



## Document text

(a) By January 1, 2021, each rail carrier operating a high-hazard flammable unit train as defined in § 171.8, comprised of at least one tank car loaded with a Packing Group I material must ensure the train meets the ECP braking capability requirements as prescribed in § 174.310 of this subchapter.

(b) By May 1, 2023, each rail carrier operating a high-hazard flammable unit train as defined in § 171.8, not described in paragraph (a) of this section must ensure the train meets the ECP braking capability requirements as prescribed in § 174.310 of this subchapter.

(c) Alternate brake systems may be submitted for approval through the processes and procedures outlined in 49 CFR part 232, subpart F.

[80 FR 26749, May 8, 2015]

## Provenance

- Official: Yes
- Source: <https://www.govinfo.gov/app/details/CFR-2017-title49-vol3/CFR-2017-title49-vol3-sec179-102-10>
- Source ID: `govinfo-cfr`
- SHA-256: `e636806c04aaea41ca14f3af158a8d269defa2279d2fe79207438e56975dae20`
- Retrieved: 2026-08-12T01:42:03.130Z
- Exported: 2026-08-23T02:40:35.797Z
- Document slug: `49-cfr-179-102-10`

### Source metadata

```json
{
  "part": "179",
  "section": "179.102-10",
  "subpart": "Subpart D—Specifications for Non-Pressure Tank Car Tanks (Classes DOT-111AW, 115AW, and 117AW)",
  "annualEdition": 2017,
  "revisedAsOf": "2017-10-01",
  "govInfoPackage": "CFR-2017-title49-vol3",
  "legalStatus": "official-annual-cfr-edition",
  "effectiveDateNote": null,
  "historicalAnchor": true,
  "historicalAnchorNote": "The section appears in an official annual CFR edition but is absent from the connected current eCFR corpus.",
  "jurisdiction": "US"
}
```