What is the gate numbering system for Terminal 3 at YYZ?

The gate numbering system for Terminal 3 at YYZ utilizes an alphanumeric format, specifically combining numbers with letters. This system allows for a greater range of gate designations, which is particularly useful in busy airports to manage the complex flow of passengers and aircraft. Terminal 3 specifically incorporates this alphanumeric system to provide clear differentiation and easy identification of gates.

In this context, the utilization of both letters and numbers enhances operational efficiency and aids passengers in navigating the terminal more effectively. It can help reduce confusion that may arise from purely numeric or alphabetic systems, especially during peak travel times.

The other options, while they do represent different forms of gate identification, do not reflect how Terminal 3 actually organizes its gates, making the alphanumeric designation the accurate choice for this setting.