All baggage, briefcases, backpacks, and boxes may be searched. Anything larger than a briefcase or a purse will be searched.

Bikes are not allowed on subway or commuter rail lines.

Due to proximity to the FleetCenter, the Orange Line and highway buses will not permit packages larger than a briefcase or pocketbook

The FleetCenter area is closed and mostly inaccessible.

North Station and Lovejoy Wharf will close starting Friday July 23, at 8 p.m.

North Shore commuter rail line will terminate at stations north of Boston with shuttle buses and subway trains providing connecting service.

At Haymarket Station:
■ Green Line service will terminate
■ Orange Line is open
■ Bus service will not run after 3 p.m.

Plan ahead and buy tickets, tokens and passes in advance.

Additional trains and buses are running all week long.

New street signs will be unveiled to make it easier to find T stations.

Service changes and revised schedules will be available on www.mbta.com.

200 MBTA ambassadors will be dispatched to offer directions to visitors and commuters unfamiliar with the T.