Happy Halloween, Source readers! And, as usual, there will be some bus detours tonight in order to accommodate the annual West Hollywood Halloween Carnaval.

Bus lines 2, 4, 10/48, 30, 105, 330, 704 and 705 will be impacted throughout the day and until 8 a.m. Friday.

Please click here for detour details on each of the lines.

Also, Metro Rail will be running regular hours tonight, meaning that the last train on rail lines will be between midnight and 1 a.m. — with last trains for certain connecting leaving earlier. Please see rail timetables for more info.

And, finally, Instagrammers: please share your photos of people in great costumes using the Metro system!