P.R. Laws tit. 9, § 5402
Every motor vehicle that travels on the public thoroughfares shall be equipped with a [brake] system as stated below:
(a) At least two (2) independent braking systems, each of which shall be sufficient by itself to stop the motion of the vehicle within an adequate distance, and one of which shall be designed to operate it [sic] with the feet. Motorcycles shall need two (2) brakes, one in the front wheel and the other in the rear wheel.
(b) The brakes on motor vehicles and trailers shall be kept in good condition. The Secretary is hereby empowered to provide and regulate the inspection of the vehicle to enforce compliance with the provisions of this subsection. The Secretary may deny, suspend or revoke the registration of any of the vehicles referred to in this subchapter when it is determined that the vehicle’s brakes do not comply with the provisions established in this section.
(c) The brakes of every trailer known as van must be constructed in such a way that they can be operated from the control cabin of the propelling truck, and in such a way that the brakes will operate independently from the brakes of the propelling truck. Said brakes shall be designed and connected in such a way that in the event the trailer is accidentally disconnected from the propelling vehicle, they will operate automatically.
(d) The other vehicles that are not deemed to be motor vehicles shall be provided with an adequate brake system and maintained in good condition.
History —Jan. 7, 2000, No. 22, § 14.02; June 3, 2004, No. 132, § 14; Aug. 10, 2007, No. 107, § 7, eff. 60 days after Aug. 10, 2007.