Measurement and Analysis of the Operations of Drayage Trucks in the Houston Area in Terms of Activities and Exhaust Emissions

• DOI: 10.4271/02-11-02-0007
• Publication Date: 2018-06-06T09:01:00Z
• Authors: Alan P. Stanard; Carl Fulper; Sandeep Kishan; Michael Sabisch
• Keywords: Port (circuit theory); Trailer

The effects of exhaust emissions on public welfare have prompted the US Environmental Protection Agency to take various actions toward understanding, modeling, and reducing air pollution from vehicles. This study was performed better understand heavy-duty diesel-powered tractor-trailer trucks that operate in drayage service, which involves moving shipping containers or port terminals. involved use portable measurement systems (PEMS) measure both gaseous particulate matter (PM) mass emission rates record vehicle engine parameters test as they their normal service. These measurements were supplemented with terminal gate entry/exit logs for all entering two Port Houston Authority container datasets combined analyze model year characteristics over time, evaluate visit frequencies durations, assess geographic distributions perform estimate pollutant related operations. When compared certification results, measured generally exceeded standards terms nitrogen oxides PM, although this difference may be partly because these vehicles not tested cycles but rather actual in-use operation. findings work indicate less than 3.5 percent truck are released during operation within terminals, at higher loads extensive travels throughout region around port.