The EMD SD70 is a type of diesel-electric locomotive built by Electro-Motive Diesel (EMD). Introduced in the 1990s, it is known for its powerful engine and reliability, making it a popular choice for freight transport. The SD70 series includes various models, such as the SD70M and SD70MAC, which are designed for different railroads and operational needs. These locomotives typically feature a 4,000-horsepower engine and advanced technology for efficient performance. The SD70 is widely used across North America, serving major freight carriers like Union Pacific and BNSF Railway. Its robust design allows it to handle heavy loads and challenging terrains.