In Puerto Rico, speed limits vary depending on the area. In urban areas, the speed limit is 25 MPH to ensure safety in densely populated zones. School zones have a stricter limit of 15 MPH to protect children. You can drive up to 45 MPH in rural areas, allowing for a quicker pace in less populated regions. On highways, the speed limit is 65 MPH, facilitating faster travel between major destinations. Always pay attention to posted signs, as speed limits are strictly enforced to ensure road safety.