Baldwin AS-416

The Baldwin AS-416 was a diesel-electric locomotive of the road switcher type rated at 1,600 hp (1,200 kW), that rode on three-axle trucks, having an A1A-A1A wheel arrangement.

Baldwin AS-416
Norfolk Southern number 1616, an AS-416, at Chesapeake, VA, in 1968
Type and origin Power type Diesel-electric Builder Baldwin Locomotive Works Model AS-416 Build date May 1951–December 1955 Total produced 25
Specifications Configuration: ​  • AAR A1A-A1A Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Prime mover 608A
Performance figures Power output 1,600 hp (1,200 kW)

Used in much the same manner as its four-axle counterpart, the Baldwin AS-16, though the wheel arrangement spread out the axle load for operation on light rail such as are found on branch lines.

It was introduced in 1950 as a replacement of the DRS-6-4-1500 and remained in Baldwin's catalog until their cessation of locomotive manufacture in 1956.

Only 25 units were sold to four railroads — all of whom had bought the earlier model. The vast majority (17 of the 25 units) were purchased by the original Norfolk Southern Railway (1942–82), becoming a signature locomotive for the company.