Title 49, TransportationRelease 119-110
§31137 Electronic Logging Devices and Brake Maintenance Regulations
Title 49 › SUBTITLE VI — MOTOR VEHICLE AND DRIVER PROGRAMS › PART B — COMMERCIAL › CHAPTER 311 — COMMERCIAL MOTOR VEHICLE SAFETY › SUBCHAPTER III — SAFETY REGULATION › § 31137
Summary
The Secretary of Transportation must write rules within one year of the 2012 Act that require interstate commercial trucks driven by drivers who follow the federal hours-of-service rules to use electronic logging devices. Those rules must make the devices record hours accurately, log vehicle location, resist tampering, and either sync with the engine or detect when the vehicle is running. Law enforcement must be able to read the device during a roadside inspection. The rules must be in effect two years after the final rule is published, except drivers moving motor homes or RVs in “driveaway‑towaway” operations may use either paper logs or electronic devices. The Secretary must set a certification process so uncertified devices cannot be used as official records. The rules must also protect drivers’ privacy, limit use of device data to enforcing safety and hours rules, and prevent devices from being used to harass drivers. Electronic logging device — an electronic tool that automatically records a driver’s hours and meets the rules. Tamper resistant — built so records of date, time, location, and driving status cannot be improperly changed. The Secretary must also keep rules to ensure brakes and brake systems are properly inspected and maintained, including minimum training and qualifications for the employees who do that work.
Full Legal Text
Title 49, §31137
Transportation, Source: USLM XML via OLRC
(a)Use of Electronic Logging Devices.—
Not later than 1 year after the date of enactment of the Commercial Motor Vehicle Safety Enhancement Act of 2012, the Secretary of Transportation shall prescribe regulations—
(1)requiring a commercial motor vehicle involved in interstate commerce and operated by a driver subject to the hours of service and the record of duty status requirements under part 395 of title 49, Code of Federal Regulations, be equipped with an electronic logging device to improve compliance by an operator of a vehicle with hours of service regulations prescribed by the Secretary; and
(2)ensuring that an electronic logging device is not used to harass a vehicle operator.
(b)Electronic Logging Device Requirements.—
(1)In general.—
The regulations prescribed under subsection (a) shall—
(A)require an electronic logging device—
(i)to accurately record commercial driver hours of service;
(ii)to record the location of a commercial motor vehicle;
(iii)to be tamper resistant; and
(iv)to be synchronized to the operation of the vehicle engine or be capable of recognizing when the vehicle is being operated;
(B)allow law enforcement to access the data contained in the device during a roadside inspection; and
(C)except as provided in paragraph (3), apply to a commercial motor vehicle beginning on the date that is 2 years after the date that the regulations are published as a final rule.
(2)Performance and design standards.—
The regulations prescribed under subsection (a) shall establish performance standards—
(A)defining a standardized user interface to aid vehicle operator compliance and law enforcement review;
(B)establishing a secure process for standardized—
(i)and unique vehicle operator identification;
(ii)data access;
(iii)data transfer for vehicle operators between motor vehicles;
(iv)data storage for a motor carrier; and
(v)data transfer and transportability for law enforcement officials;
(C)establishing a standard security level for an electronic logging device and related components to be tamper resistant by using a methodology endorsed by a nationally recognized standards organization; and
(D)identifying each driver subject to the hours of service and record of duty status requirements under part 395 of title 49, Code of Federal Regulations.
(3)Exception.—
A motor carrier, when transporting a motor home or recreation vehicle trailer within the definition of the term “driveaway-towaway operation” (as defined in section 390.5 of title 49, Code of Federal Regulations), may comply with the hours of service requirements by requiring each driver to use—
(A)a paper record of duty status form; or
(B)an electronic logging device.
(c)Certification Criteria.—
(1)In general.—
The regulations prescribed by the Secretary under this section shall establish the criteria and a process for the certification of electronic logging devices to ensure that the device meets the performance requirements under this section.
(2)Effect of noncertification.—
Electronic logging devices that are not certified in accordance with the certification process referred to in paragraph (1) shall not be acceptable evidence of hours of service and record of duty status requirements under part 395 of title 49, Code of Federal Regulations.
(d)Additional Considerations.—
The Secretary, in prescribing the regulations described in subsection (a), shall consider how such regulations may—
(1)reduce or eliminate requirements for drivers and motor carriers to retain supporting documentation associated with paper-based records of duty status if—
(A)data contained in an electronic logging device supplants such documentation; and
(B)using such data without paper-based records does not diminish the Secretary’s ability to audit and review compliance with the Secretary’s hours of service regulations; and
(2)include such measures as the Secretary determines are necessary to protect the privacy of each individual whose personal data is contained in an electronic logging device.
(e)Use of Data.—
(1)In general.—
The Secretary may utilize information contained in an electronic logging device only to enforce the Secretary’s motor carrier safety and related regulations, including record-of-duty status regulations.
(2)Measures to preserve confidentiality of personal data.—
The Secretary shall institute appropriate measures to preserve the confidentiality of any personal data contained in an electronic logging device and disclosed in the course of an action taken by the Secretary or by law enforcement officials to enforce the regulations referred to in paragraph (1).
(3)Enforcement.—
The Secretary shall institute appropriate measures to ensure any information collected by electronic logging devices is used by enforcement personnel only for the purpose of determining compliance with hours of service requirements.
(f)Definitions.—
In this section: (1) Electronic logging device.—
(2)Tamper resistant.—
The term “tamper resistant” means resistant to allowing any individual to cause an electronic device to record the incorrect date, time, and location for changes to on-duty driving status of a commercial motor vehicle operator under part 395 of title 49, Code of Federal Regulations, or to subsequently alter the record created by that device.
(g)Brakes and Brake Systems Maintenance Regulations.—
The Secretary shall maintain regulations on improved standards or methods to ensure that brakes and brake systems of commercial motor vehicles are maintained properly and inspected by appropriate employees. At a minimum, the regulations shall establish minimum training requirements and qualifications for employees responsible for maintaining and inspecting the brakes and brake systems.
Legislative History
Notes & Related Subsidiaries
Historical and Revision Notes
Revised SectionSource (U.S. Code)Source (Statutes at Large) 31137(a)49 App.:2505 (note).Nov. 18, 1988, Pub. L. 100–690, § 9104(b), 102 Stat. 4529. 31137(b)49 App.:2521.Oct. 30, 1984, Pub. L. 98–554, 98 Stat. 2829, § 231; added Nov. 18, 1988, Pub. L. 100–690, § 9110, 102 Stat. 4531. In subsection (b), the text of 49 App.:2521(a) is omitted as executed.
Editorial Notes
References in Text
The date of enactment of the Commercial Motor Vehicle Safety Enhancement Act of 2012, referred to in subsec. (a), is the date of enactment of title II of div. C of Pub. L. 112–141, which was approved July 6, 2012.
Amendments
2015—Pub. L. 114–94, § 5508(b)(2), amended directory language of Pub. L. 112–141, § 32301(b)(3). See 2012 Amendment note for subsecs. (a) to (f) below. Subsec. (b)(1)(C). Pub. L. 114–94, § 5507(1), substituted “except as provided in paragraph (3), apply to” for “apply to”. Subsec. (b)(3). Pub. L. 114–94, § 5507(2), added par. (3). 2012—Pub. L. 112–141, § 32301(b)(1), substituted “Electronic logging devices and brake maintenance
Regulations
” for “Monitoring device and brake maintenance
Regulations
” in section catchline. Subsecs. (a) to (f). Pub. L. 112–141, § 32301(b)(3), as amended by Pub. L. 114–94, § 5508(b)(2), added subsecs. (a) to (f) and struck out former subsec. (a). Prior to amendment, text of subsec. (a) read as follows: “If the Secretary of Transportation prescribes a regulation about the use of monitoring devices on commercial motor vehicles to increase compliance by operators of the vehicles with hours of service
Regulations
of the Secretary, the regulation shall ensure that the devices are not used to harass vehicle operators. However, the devices may be used to monitor productivity of the operators.” Former subsec. (b) redesignated (g). Subsec. (g). Pub. L. 112–141, § 32931(a), which directed substitution of “The Secretary shall maintain” for “Not later than
December 1, 1990, the Secretary shall prescribe”, was executed by making the substitution for “Not later than
December 31, 1990, the Secretary shall prescribe”, to reflect the probable intent of Congress. Pub. L. 112–141, § 32301(b)(2), redesignated subsec. (b) as (g).
Statutory Notes and Related Subsidiaries
Effective Date
of 2015 AmendmentAmendment by section 5507 of Pub. L. 114–94 effective Oct. 1, 2015, see section 1003 of Pub. L. 114–94, set out as a note under section 5313 of Title 5, Government Organization and Employees. Pub. L. 114–94, div. A, title V, § 5508(b), Dec. 4, 2015, 129 Stat. 1554, provided that the amendment made by section 5508(b)(2) is effective as of July 6, 2012, and as if included in Pub. L. 112–141 as enacted.
Effective Date
of 2012 AmendmentAmendment by Pub. L. 112–141 effective Oct. 1, 2012, see section 3(a) of Pub. L. 112–141, set out as an Effective and Termination Dates of 2012 Amendment note under section 101 of Title 23, Highways.
Reference
Citations & Metadata
Citation
49 U.S.C. § 31137
Title 49, Transportation
Last Updated
Sep 23, 2026
Release point: 119-110