P.R. Laws tit. 9, § 5152
The general rule set forth above shall allow the following exceptions:
(a) When a vehicle overtakes or passes another vehicle in the same direction, subject to the rules regarding such maneuvers.
(b) When the right half of the roadway is obstructed or closed to traffic, in which case any person thus traveling must yield the right of way to any vehicle traveling on the left side of the roadway which is free from obstruction and at such a distance as to produce an immediate danger.
(c) On one-way roadways.
(d) When the roadway is so narrow as to prevent it, in which case it shall be permissible for the vehicle to keep to the center while the roadway is straight and as long as said vehicle does not have to yield the right of way to other vehicles traveling in the same or opposite direction.
(e) On roadways divided into three (3) lanes marked for traffic in opposite directions, subject to the provisions of § 5156 of this title.
Any person who violates the provisions of this section shall incur an administrative fault and shall be punished with a fine of twenty-five dollars ($25).
History —Jan. 7, 2000, No. 22, § 6.02, eff. 1 year after Jan. 7, 2000.