Federal Regulations
Who must complie,Rules,Fatigued Operator,conform to speed,Epuipment and Safe loads.

Federal Regulations 392.
§392.1 Scope of the rules in this part.
Every motor carrier, its officers, agents, representatives, and employees responsible for the management, maintenance, operation, or driving of commercial motor vehicles, or the hiring, supervising, training, assigning, or dispatching of drivers, shall be instructed in and comply with the rules in this part.

§392.2 Applicable operating rules.
Every commercial motor vehicle must be operated in accordance with the laws, ordinances, and regulations of the jurisdiction in which it is being operated. However, if a regulation of the Federal Highway Administration imposes a higher standard of care than that law, ordinance or regulation, the Federal Highway Administration regulation must be complied with.

§392.3 Ill or fatigued operator.
No driver shall operate a motor vehicle, and a commercial motor carrier shall not require or permit a driver to operate a commercial motor vehicle, while the driver's ability or alertness is so impaired, or so likely to become impaired, through fatigue, illness, or any other cause, as to make it unsafe for him/her to begin or continue to operate the commercial motor vehicle. However, in a case of grave emergency where the hazard to occupants of the commercial motor vehicle or other users of the highway would be increased by compliance with this section, the driver may continue to operate the commercial motor vehicle to the nearest place at which that hazard is removed.

§392.6 Schedules to conform with speed limits.
No motor carrier shall schedule a run nor permit nor require the operation of any commercial motor vehicle between points in such period of time as would necessitate the commercial motor vehicle being operated at speeds greater than those prescribed by the jurisdictions in or through which the commercial motor vehicle is being operated.

§392.7 Equipment, inspection and use.
No commercial motor vehicle shall be driven unless the driver thereof shall have satisfied himself/herself that the following parts and accessories are in good working order, nor shall any driver fail to use or make use of such parts and accessories when and as needed:
Service brakes, including trailer brake connections.

§392.9 Safe loading.
(a) General. No person shall drive a commercial motor vehicle and a motor carrier shall not require or permit a person to drive a commercial motor vehicle unless --
(a)(1) The commercial motor vehicle's cargo is properly distributed and adequately secured as specified in §§393.100 393.106 of this subchapter.
(a)(2) The commercial motor vehicle's tailgate, tailboard, doors, tarpaulins, its spare tire and other equipment used in its operation, and the means of fastening the commercial motor vehicle's cargo are secured; and
(a)(3) The commercial motor vehicle's cargo or any other object does not obscure the driver's view ahead or to the right or left sides, interfere with the free movement of his/her arms or legs, prevent his/her free and ready access to accessories required for emergencies, or prevent the free and ready exit of any person from the commercial motor vehicle's cab or driver's compartment.
(b) Drivers of trucks and truck tractors. Except as provided in paragraph (b)(4) of this section, the driver of a truck or truck tractor must --
(b)(1) Assure himself/herself that the provisions of paragraph (a) of this section have been complied with before he/she drives that commercial motor vehicle;
(b)(2) Examine the commercial motor vehicle's cargo and its load securing devices within the first 25 miles after beginning a trip and cause any adjustments to be made to the cargo or load securing devices (other than steel strapping) as may be necessary to maintain the security of the commercial motor vehicle's load; and
(b)(3) Reexamine the commercial motor vehicle's cargo and its load securing devices periodically during the course of transportation and cause any adjustments to be made to the cargo or load securing devices (other than steel strapping) as may be necessary to maintain the security of the commercial motor vehicle's load. A periodic reexamination and any necessary adjustments must be made --
(b)(3)(i) When the driver makes a change of his/her duty status; or
(b)(3)(ii) After the commercial motor vehicle has been driven for 3 hours; or
(b)(3)(iii) After the commercial motor vehicle has been driven for 150 miles, whichever occurs first.
(b)(4) The rules in this paragraph do not apply to the driver of a sealed commercial motor vehicle who has been ordered not to open it to inspect its cargo or to the driver of a commercial motor vehicle that has been loaded in a manner that makes inspection of its cargo impracticable.

Federal Regulations 393.

§393.42 Brakes required on all wheels.
(a) Every commercial motor vehicle shall be equipped with brakes acting on all wheels.
(b) Exception. (1) Trucks or truck tractors having three or more axles --
(b)(1)(i) Need not have brakes on the front wheels if the vehicle was manufactured before July 25, 1980; or
(b)(1)(ii) Manufactured between July 24, 1980, and October 27, 1986, must be retrofitted to meet the requirements of this section within one year from February 26, 1987, if the brake components have been removed.
(b)(2) Any motor vehicle being towed in a driveaway towaway operation must have operative brakes as may be necessary to ensure compliance with the performance requirements of 393.52. This paragraph is not applicable to any motor vehicle towed by means of a towbar when any other vehicle is full mounted on such towed motor vehicle or any combination of motor vehicles utilizing three or more saddle mounts. (See 393.71(a)(3).)
(b)(3) Any full trailer, any semitrailer, or any pole trailer having a GVWR of 3,000 pounds or less must be equipped with brakes if the weight of the towed vehicle resting on the towing vehicle exceeds 40% of the GVWR of the towing vehicle.