When do I need a P endorsement on my drivers license?

You need a P endorsement on your driver's license when you plan to operate a vehicle designed to transport passengers, typically for hire, such as buses or vans carrying more than a certain number of passengers (usually 15 including the driver). The requirements for obtaining a P endorsement vary by state, but they generally include passing a written test and a driving skills test. It's essential to check your state's specific regulations for the exact criteria and process.