VicRoads has warned a planned blockade of the Bolte Bridge by sections of the taxi industry could cause major delays during Monday morning's peak.

Taxi licence holders plan to blockade the tollway bridge in both directions between 8.30am and 9am on Monday, before converging on the steps of Parliament House for another protest rally.

Hundreds rallied at the same location on Saturday.

The protest is aimed at the Andrews government's buyback of all perpetual taxi licences, after it announced last year that it would cancel all existing licences and deregulate the industry, which has been turned on its head by ride-hailing service Uber.