129i-10

Featured route 129i-10 is a bus route served between Pte. Rod. Octavia (shown Gerolamo Cardano) and Parque Imaginario (shown W. Rowan Hamilton / Will. R Hamilton), via Est. Vila Sabrina.

The route salutes mathematicians Gerolamo Cardano and Sir William Rowan Hamilton, with electric destination displays and route cards showcasing their names in respective direction. The route is currently the only route with a lower-case alphabet in its number, with "i" refering to the equation $$i^2 = -1$$. However, the default destination displays still showcases it as 129I with a upper-case alphabet.