NEW YORK — Megabus is trying to get U.S. regulators to restrict BoltBus from adding certain routes, according to a Bloomberg news report. The U.S.-based curbside carrier has filed at least three challenges with the U.S. Surface Transportation Board since May 2010. Joint operators of the BoltBus service, Peter Pan Bus Lines Inc. and Greyhound Lines Inc., should compete separately on Northeastern U.S. routes, according to critics. To read the full story, click here.