Keeping you up to date on service changes for the 4 train.
Last updated 21-May-08.
http://www.robotpolishers.com/subway

Downtown trains run express from 125 St to Grand Central
Weekend, May 23 - 26, 11 PM Fri to 5 AM Mon * Trains stop at 86 and 59 Sts. * For service to 116, 110, 103, 96, 77, 68, and 51 Sts, take the 4 to 86 St (get a free ticket), 59 St, or Grand Central and transfer to an uptown 4. * For service from these stations, take an uptown 4 to 59 St, 86 St (get a free ticket), or 125 St and transfer to a downtown 4,
Downtown trains run express from 125 St to Grand Central

Downtown trains run express from 125 St to Grand Central
Late night until Jun 27, 11 PM to 5 AM Mon to Fri *Trains stop at 86 and 59 Sts. * For service to 116, 110, 103, 96, 77, 68, and 51 Sts, take the 4 or 6 to 86 St (get a free ticket), 59 St, or Grand Central and transfer to an uptown 4 or 6. * For service from these stations, take an uptown 4 or 6 to 59, 86 Sts (get a free ticket), or 125 St and transfer to a downtown 4 or 6.
Downtown trains run express from 125 St to Grand Central

Brooklyn-bound trains skip Bergen St, Grand Army Plaza, and Eastern Pkwy
Late night, May 24 - 26, 12:01 AM to 7 AM Sat, 12:01 AM to 8 AM Sun,12:01 AM to 5 AM Mon * For service to these stations, take the 2 3 or 4 to Franklin Av and transfer to a Manhattan-bound 2 3 or 4. * For service from these stations, take a Manhattan-bound 2 3 or 4 to Atlantic Av and transfer to a Brooklyn-bound 2 3 or 4.
Brooklyn-bound trains skip Bergen St, Grand Army Plaza, and Eastern Pkwy

Manhattan-bound trains skip Mosholu Pkwy
Weekend, May 17 - 18, 7 AM to 7 PM Sat and Sun * For service from Mosholu Pkwy, take a Bronx-bound 4 to Woodlawn and transfer to a Manhattan-bound 4. * For service to Mosholu Pkwy, take the 4 to Bedford Park Blvd and transfer to a Bronx-bound 4.
Manhattan-bound trains skip Mosholu Pkwy

Manhattan-bound trains skip Bedford Park Blvd, Kingsbridge, Fordham Rds, and 183 St
Weekend, May 17 - 18, 7 AM to 7 PM Sat and Sun * For service from these stations, take a Bronx-bound 4 to Mosholu Pkwy and transfer to a Manhattan-bound 4. * For service to these stations, take the 4 to Burnside Av and transfer to a Bronx-bound 4.
Manhattan-bound trains skip Bedford Park Blvd, Kingsbridge, Fordham Rds, and 183 St

Manhattan-bound trains skip Kingsbridge, Fordham Rds, and 183 St
Weekday, May 21 - 23, 10:30 AM to 3 PM Wed to Fri * For service from these stations, take a Bronx-bound 4 to Bedford Pk Blvd and transfer to a Manhattan-bound 4. * For service to these stations, take the 4 to Burnside Av and transfer to a Bronx-bound 4.
Manhattan-bound trains skip Kingsbridge, Fordham Rds, and 183 St

Bronx-bound trains skip Mosholu Pkwy
Weekday until May 30, 10:30 AM to 3 PM Mon to Fri (normal service May 26 and 29) * For service to this station, take the 4 to Woodlawn and transfer to a Manhattan-bound 4. * For service from this station, take a Manhattan-bound 4 to Bedford Pk Blvd and transfer to a Bronx-bound 4.
Bronx-bound trains skip Mosholu Pkwy