Puerto Rico Highway 8 (PR-8) is a main highway that serves as a third route from San Juan, Puerto Rico to Carolina, Puerto Rico; the others being PR-3 and PR-26. It is, still, a highly congested highway, noticeable when congestion jams are found on PR-17, where PR-8 begins, and it continues to PR-3. The first kilometers of PR-8 (east of PR-17) were known before as Puerto Rico Highway 4, but the Department of Transportation renumbered the entire highway PR-8 and there is no longer a PR-4. It ends at PR-3 near Carolina with a length of about 4.0 kilometers (2.5 mi).
