Chicago Locomotive Idling Reduction: U.S. Environmental Protection Agency (EPA)
In 2002, the EPA ran a pilot program in Chicago using new technologies to reduce the idling time of locomotives. Seven locomotives were outfitted with Diesel Driven Heating Systems (DDHS) ($28,000 per unit) and SmartStart ($7,500 per unit). These systems keep the engines and cabs warm without needing to leave the entire engine systems running, even in sub-zero weather.
These technologies are based on conductors' reluctance to shut down their engines during operational hours. The systems paid for themselves within 2.5 years, providing reductions in oil consumption, required maintenance, and significantly extended engine life.
Installing these systems into locomotives has the following environmental benefits:
- Reduces greehouse gas emissions
- Reduces noise pollution
- Provides fuel savings


