Port Authority is asking riders to comment at an open house next week on plans to overhaul the transit system.

The event will run from 8 a.m. to 8 p.m. Wednesday at the Omni William Penn Hotel, Downtown. A second open house is set in Oakland on June 8 in Alumni Hall's Connolly Ballroom, 4227 Fifth Ave., on the University of Pittsburgh campus from 2 to 5 and 5:30 to 7:30 p.m.

The Transit Development Plan is an effort to make Port Authority's network of bus and light-rail routes faster, more frequent, simpler to use and more efficient.

The transit agency and Nelson/Nygaard Consulting Associates have developed three general concepts of how this might be achieved.

The Web site tdp.portauthority.org details the concepts. The public can submit comments online.