EPA Proposes First Onboard Diagnostic Systems (OBD) for New Large Trucks and Buses

[MetroMPG]

EPA is [1]proposing rules requiring the use of onboard diagnostic (OBD) systems to monitor the emissions control systems of large diesel and gasoline highway trucks and buses weighing more than 14,000 pounds.

Onboard diagnostic systems, used in passenger vehicles since the mid-1990s, monitor emissions control components, detect need for emission-related repairs, and alert the vehicle’s operator of these problems. They also help inform service technicians what problem exists so that it can be repaired properly. The OBD systems for highway trucks will work the same way.

The proposed requirements are part of the Clean Diesel Truck and Bus Program, which is designed to result in significant reductions of nitrogen oxides, particulate matter, non-methane hydrocarbons, carbon monoxide, sulfur dioxide, and air toxics from diesel-powered vehicles. These emission reductions will prevent 8,300 premature deaths, more than 9,500 hospitalizations, and 1.5 million lost work days, according to the EPA.

more...

http://www.greencarcongress.com/2006...oposes_fi.html

[landspeed]

They could get a scangauge fitted Although it might not help that much with fuel economy, as rolling resistance plays a large part in the poor fuel economy of a lorry (I think, by looking at my spreadsheet).

[MetroMPG]

I was just surprised to learn that trucks didn't already have sensors & computerized monitoring. (Or maybe they do, but not standardized.)

[onegammyleg]

Originally Posted by MetroMPG

I was just surprised

Ditto