Like Puerto Rico Highway 189, it passes through the business centers of Juncos, Las Piedras and Humacao.

[2][3] Puerto Rico Highway 198R (Spanish: Carretera Ramal 198, abbreviated Ramal PR-198 or PR-198R) is a one-way street that serves as a parallel route of PR-198 in downtown Humacao.

This road extends from PR-198 near PR-3 to PR-198 heading west.

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