Here are some offices that are closed and other changes Monday in honor of the Martin Luther King Jr. holiday:

Martin Luther King Day will be celebrated Monday. (AP)

The Post Office is closed except for Express mail.

Courts are closed except for adult arraignments and new juvenile referrals in the District.

Liquor stores: Closed in Montgomery County; closed in D.C. at owners’ discretion.

Parking enforcement: Meter fees not enforced in D.C., Virginia, Montgomery and Prince George’s counties (except New Carrolton garage).

Transportation services:

No service for MARC or VRE.

MTA Commuter Bus will only operate route 201 on a weekend/holiday schedule.

Ride On will operate on a special modified schedule.

DASH will operate on a Saturday schedule.

CUE will operate on a modified weekday schedule.

Fairfax Connector will operate on a holiday weekday schedule.

ART will operate routes 41, 42, 51 and 87 only, all on a Saturday schedule.

The Bus will operate with regular service.

PRTC OmniRide will operate with modified holiday service.

Loudoun Commuter Bus will operate on a limited schedule.

Metrorail and Metrobus will operate on a modified Saturday schedule.

MetroAccess subscriptions are canceled. A reservation must be made.

There will be track work on the Blue, Orange and Red lines.

Federal Center SW and Capitol South stations are closed this weekend. Free shuttle buses are operating between L’Enfant Plaza and Eastern Market. For more information, call 202-637-7000 or check

More on the holiday weekend:

For more traffic and commuter information, read Dr. Gridlock.

For the weekend and holiday weather, check our Capital Weather Gang forecast.

Want to plan your activities for the long holiday weekend? We have suggestions for you on our Going Out Guide blog.