DEUTA CHM – Crash Hardened Memory Module

CHM8X Platform

DEUTA AMERICA Corporation is an international leading supplier of crash hardened memory (CHM) for transit vehicles.

A crash hardened memory module is protected storage that survives the accident that destroys the equipment around it. The recorder, the cameras and the vehicle can all be lost; the data has to remain readable. It is known in the industry as fire and crash protected memory. In the United States the regulatory term for the device is a crashworthy event recorder memory module, or ERMM, and the criteria it must meet are set out in Appendix D to 49 CFR Part 229; in Canada the Locomotive Voice and Video Recorder Regulations call it a crash-protected memory module.

What it protects against

110 kN static crush, 55 g shock, a dropped steel bolt, 750 °C fire, fuel and salt water immersion.

What it holds

Event recorder data, and inward and outward facing video and audio from a cab or passenger area image recording system.

How it integrates

The recorder writes to the module over Ethernet or USB. Existing systems usually need only their storage target changed.

Where it is used

Commuter and intercity cabs and cab cars, metro, light rail, high-speed trainsets, buses, and retrofit programmes.

Why protected video memory is now required

Rail and bus regulation and industry practice now require onboard video to be protected to the same standard as event data. On the FRA side, 49 CFR 229.136(a)(5) requires image recordings from a lead cab in commuter or intercity passenger service to be held on a certified crashworthy memory module. In Canada, the Locomotive Voice and Video Recorder Regulations (SOR/2020-178) require 48 hours of voice and video data on a crash-protected memory module meeting IEEE 1482.1-2013, addressing long-standing Transportation Safety Board of Canada recommendations. On the transit side, FTA Safety Bulletin 20-2 and APTA RT-OP-RP-024-19 set the same expectation for rail transit operating compartments.

Why this technology is required

Made in the USA

All CHM Modules are Manufactured in the USA - FTA Buy America compliant

Choose a model

CHM8X platform

CHM86

Crash hardened memory for multi-camera video

Protected video memory for cab image recording systems in the smallest footprint we build. Many camera channels arrive over one PoE cable that carries both power and data.

Standard	IEEE 1482.1-2013, FRA 49 CFR 229
Capacity	256 GB, 512 GB or 1 TB
Interface	Gigabit Ethernet, PoE
Usage	Video
Weight	approx. 4 kg (9 lb)
Manufactured	USA - FTA Buy America compliant

CHM86 specification

CHM84

Crashworthy event recorder memory

The smallest and lightest module in the platform, and the origin of its certification. USB connected, for event recorder integration or standalone protected memory.

Standard	IEEE 1482.1-2013, FRA 49 CFR 229
Capacity	16 GB to 128 GB
Interface	M8 USB 2.0, 4-pole
Usage	Data
Power	via USB
Weight	approx. 3.3 kg (7 lb)
Manufactured	USA - FTA Buy America compliant

CHM84 specification

CHM82

High capacity, 1999 criteria

High capacity crash protected memory for systems specified to the 1999 edition of IEEE 1482.1. Compact enough to mount inside an event recorder or a network video recorder.

Standard	IEEE 1482.1-1999
Capacity	16 GB to 1 TB
Interface	M8 USB 2.0, 4-pole
Usage	Data
Power	via USB
Weight	approx. 3.4 kg (7 lb)
Manufactured	USA - FTA Buy America compliant

CHM82 specification

CHM26

High capacity crash hardened memory unit

Standalone high capacity protected video memory with a 10/100 Mbit/s Ethernet interface, a 24 to 110 V DC wide range supply and on-board processing. Optimised for video data protection.

Standard	IEEE 1482.1-2013, FRA 49 CFR 229
Capacity	256 GB, 512 GB or 1 TB
Interface	Ethernet, 10/100 Mbit/s
Usage	Video
Power	24 to 110 V DC, 10 W
Weight	approx. 13 kg (29 lb)
Manufactured	USA - FTA Buy America compliant

CHM26 specification

CHM8X Platform

Marketing sheet and brochure, PDF.

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Who does the testing

Crash survivability testing for the platform was performed by DTC Dynamic Test Center AG in Switzerland — ISO/IEC 17025 accredited under STS 0492. EN 50155 type testing was completed by the DEUTA-WERKE type test laboratory to DIN EN ISO/IEC 17025:2018. Test verification data is retained and made available to a transit authority, a railroad or to FRA on request.

Specification package Talk to an engineer

Why DEUTA

More than 10,000 DEUTA protected memory units in service worldwide, and crash hardened memory supplied for video since 2021.

Our track record