OC Transpo will be introducing changes to more than 100 of its bus routes on Sunday, and the city wants riders to get familiar with how those changes might affect them.

The bus routes will be either cut or modified in an effort to save $22 million over the next three years.

While some routes will be cancelled, others will have reduced service. The route changes are the biggest in the history of OC Transpo.

A new website, CheckYourRoute.ca, and an online travel planner have been launched to help bus passengers determine their modified routes. Signs reminding riders of the changes have also been placed on city buses.