Which of the following is not classified as a category of Traffic Signs in the Philippines?

Tourist Signs are indeed not classified as a standard category of traffic signs in the Philippines. Traffic signs are categorized primarily to provide consistent and clear information to road users, facilitating safe navigation and compliance with traffic regulations.

The major classifications include Regulatory Signs, which inform drivers of the laws and regulations that govern road use; Warning Signs, designed to alert drivers to unexpected conditions or hazards on the road; and Informative Signs, which guide and provide essential information regarding locations and services. While Tourist Signs may serve a helpful purpose for travelers seeking attractions, they do not fit into the main regulatory framework established for traffic signage, thus distinguishing them from the other defined categories.