From 10 a.m. to 3 p.m., Wednesday to Friday, Brighton Beach-bound B trains runs local from Kings Hwy to Sheepshead Bay.
All times until mid-fall 2013: Manhattan-bound Q trains skip Cortelyou Rd, Beverley Rd, and Parkside Av.
From 9:45 a.m. to 3 p.m., Wednesday to Friday, Ditmars Blvd-bound Q trains skip Neck Rd and Avenue U.
From 11:45 p.m. to 5 a.m., Monday to Friday, Coney Island-bound F trains are rerouted via the M from Roosevelt Av to 47-50 Sts. There are no Coney Island-bound F trains at 21 St-Queensbridge, Roosevelt Island, Lexington Av/63 St, and 57 St.