By: Christina Wolfe, EDF's Ports & Transportation Analyst
Delivery trucks, wheel-loaders, school buses, and locomotives all have one thing in common – an internal combustion engine that keeps these machines churning for years. Maybe for too many years. The useful life for some of these engines, especially diesel engines, can last decades, deterring owners from upgrading to newer models with greater fuel economy and operational efficiency. Plus, these machines can be very expensive, making it difficult for owners to replace older equipment once the newest, cleanest technology becomes available. From an environmental perspective, this is bad news. Engines emit a variety of dangerous pollutants that adversely affect our health, including particulate matter (PM) and nitrogen oxides (NOx). So without the means to upgrade polluting, heavy-duty engines, what can owners do?
Enter the U.S. Environmental Protection Agency (EPA) and the Texas Commission on Environmental Quality’s Texas Emissions Reduction Plan (TERP).
First, EPA established more protective emissions standards that require new engines to be many times cleaner compared to older models. These strong standards have helped drive innovations in engine technology so that emissions are now a fraction of what they once were. Here’s a breakdown: Read More