A truck undergoes a Periodic Smoke Inspection Program opacity test in Buellton, Calif. (Beryl Technologies via Twitter) Also, CARB randomly audits fleets, reviews on-site maintenance and ...

Pre-2013 model-year engines without OBDs will be required to submit an opacity test and a visual/functional inspection twice a year. The opacity test must be up to the SAE J-1667 opacity standard.

Officials expect the stronger standards will result in about 500 more diesel-powered vehicles failing the opacity test each year and will either have to be repaired or taken off the road.

He did tell me that I was lucky the Freeclimber was a 1990 model, since he only had to perform an exhaust opacity test. I went to the waiting room, where a wall-mounted TV was blaring the reality ...

The latest Federal Reserve stress test results have highlighted “the inherent opacity” of the Fed evaluation process, according to Bank of America analyst Ebrahim H. Poonawala. The tests ...

One thing that can show on a CT scan or X-ray is a degree of haziness referred to as opacity. This can indicate ... and phrases related to this imaging test can be complicated and hard to understand.

at R L Currie Corp.’s Truck Fixer station that were subject to a smoke opacity test. These guidelines establish standards for smoke opacity levels that a vehicle must not exceed to pass the ...

The program targets commercial vehicles that are visibly emitting black smoke. A roadside opacity test (taking about 15 minutes) is conducted, and vehicles that fail the test must then be brought up ...

Take a look to see how opacity, viscosity, and specific gravity are all examined to deliver premium quality. The first test evaluates the opacity of the paint. Here, paint is applied to chart ...