Photo by Adam Gerard.

Six metro lines, 666—a ghoulish coincidence or the devil’s work? Some of the wait times for Metro might give you a real fright this weekend, considering all of the lines will be single-tracking at some point. It might be worth taking advantage of the free Halloween cab rides.

Another thing to note: Daylight Saving Time will end at 2 a.m. on Sunday, Nov. 1 and it will “fall back” to 1 a.m. Metro will be open until 3 a.m. “fall back” time (so if your clock doesn’t automatically update to the change, it will seem like Metro is actually open until 4 a.m.).

Red Line

Trains every 18 minutes

Single tracking between Dupont Circle and Van Ness to allow for rail tie, fastener and insulator renewal.

Orange Line

Trains every 24 minutes

Single tracking between Eastern Market and Stadium-Armory to allow for emergency call box, rail tie, fastener and insulator renewal.

Silver Line

Trains every 24 minutes

Single tracking between Eastern Market and Stadium-Armory to allow for emergency call box, rail tie, fastener and insulator renewal.

Blue Line

Trains every 24 minutes

Single tracking in two zones to allow for emergency call box, rail tie, fastener and insulator renewal:

• Between Pentagon City and Ronald Reagan Washington National Airport
• Between Eastern Market and Stadium-Armory

Yellow Line

Trains every 24 minutes Huntington to Mt. Vernon Square only

Single tracking between Pentagon City and Ronald Reagan Washington National Airport to allow for emergency call box, rail tie, fastener and insulator renewal. All trains will operate to/from Mt Vernon Square rather than Fort Totten. Customers traveling to/from stations north of Mt. Vernon Square should use a Green Line train to complete their trip.

Green Line

Trains every 16 minutes on Saturday only

Single tracking between Fort Totten and Prince George’s Plaza to allow for power equipment renewal.