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Driving in Puerto Rico
The rules of the road as our desk recorded them, native unit first.
Driving side
Right
Speed limits
25 / 45 / 65 mph · 40 / 72 / 105 km/h
urban / rural / motorway
International permit (IDP)
Not required
A licence in Roman script is accepted for short visits.
Blood alcohol limit
0.08 % (0.02 % under 21)
Tolls
AutoExpreso electronic tolls on the main highways; rental cars carry a transponder and bill it on.
Headlights
Not required by day.
Child seats
Required to age 9 or 4 ft 9 in, following US practice.
The island posts speed limits in miles per hour and distances on the same signs in kilometres - a genuine quirk of US administration over a metric island, and it catches people out.