The Connecticut Department of Transportation’s signal upgrade project has enabled Metro-North to add three new shuttle trains making round trips between Danbury and South Norwalk in an effort to improve weekday reverse peak and off peak service. This change began this week.

In the morning reverse-peak, a new northbound shuttle departs South Norwalk at 7:33 a.m., getting customers to employment centers at Merritt 7 and Wilton before 8.

New shuttles also depart South Norwalk at 10:08 a.m. and 10:40 p.m. (The 11:15 a.m. from South Norwalk will depart 60 minutes later at 12:15 p.m.)

In the off peak, new shuttles depart Danbury at 8:57 a.m., 11:32 a.m., and 7:25 p.m.

The 12:40 p.m. from Danbury will depart 52 minutes later at 1:32 p.m.

The last departure from Danbury will leave 36 minutes later, at 11:10 p.m.

The 6:55 p.m. peak train from Grand Central, previously connecting to a Danbury shuttle at Stamford, will become a 7:12 p.m. departure, now connecting to a shuttle at South Norwalk.

The last train to Danbury will depart South Norwalk 50 minutes later at 12:29 a.am., giving those traveling from New York a post-11 p.m. departure on weekdays.

Danbury Branch “through” service will go from four trains to three trains. These additional changes are being made:

The 5:32 a.m. peak train from Danbury will depart four minutes later at 5:36 and connect at South Norwalk with a main line electric train. Arrival at Grand Central is still 7:38 a.m. (While this train will require a transfer, the running time has improved by four minutes.)

The 7:54 a.m. peak train from Danbury, which was temporarily changed from a shuttle train to a through train in July in order to facilitate the Bronx Right-of-Way Improvement project, will remain a through train on a permanent basis.