January 15:  The Pere Marquette reduces thumb branches to one mixed train per day on each line.  The Almont Branch is reduced to three round trips per week.  [AB]

February 1:  The DT&I changes its northern passenger terminus at Jefferson in Delray to a new station opened at Fordson.  (After sale of the DT&I to Pennroad, passenger trains returned to Union Station.  [EMR4]

May 25:  The interurban line from Wyandotte to Trenton is abandoned.  [EMR4]

June 30:  The Senaca Copper Mine, served by the Copper Range Railroad, closes.  [CRH]

July 20:  The New York Central had General Electric outfit locomotive engine #2724 and a caboose with radio communications.  The test run was made on a Selkirk to Utica, NY run.  Communications was in the frequency range of 2.3 - 2.75 Mhz at a transmitted power of 50 watts.  The locomotive antenna system was contained in the tender railing.  On the caboose, the antenna ran the length of the roof and power was produced by an axle driven D.C. generator.  The test, on a freight train of 124 cars, was successful.  [From Citizens Radio Call Book Magazine, 11/1929]

August 25:  Detroit & Mackinac Ry abandons line from Au Sable River Jct. to Comins.  [MDY33]

August 25:  Detroit & Mackinac Ry abandons line from Hardy to Beavers (the Curran branch).   [MDY33]

December 8:  The GTW car ferry Grand Rapids struck a sand bar that had been formed by storms about 150 feet off the pierhead in Grand Haven.  The mishap caused the ship to suffer $11,000 is damages.  [GTWHS-5/1997]

The carferry Sainte Marie (I) is abandoned.  [AATHA-SF/1999]

Centralized Traffic Control (CTC) has first installation.  [STOV]

First experiments with air-conditioned passenger cars.  [STOV]

The GTW station in Flint is built, and the former stone station removed.  The stone was piecemarked and re-erected at Muskegon..  [AAD]

The City of Detroit reaches its current boundaries with a total area of 139 square miles.  [BOM]