Remote sensing can be used to reward motorists who maintain clean running, low polluting vehicles. In a Clean Screen program, drivers can choose to have their emissions inspected from the roadside. Vehicles certified as clean are exempted from their next periodic inspection, saving motorists time, effort, and expense to travel to a fixed testing location. Read more

Remote sensing can identify the highest emitting vehicles that contribute disproportionately to a region’s vehicle emissions. The system can then notify drivers that they must report for a station-based reinspection, or tell them about the fault and advise them to get their vehicle fixed. Read more

This service can be provided as part of a Clean Screen program at little or no extra cost. Find out more

Remote sensing can test millions of vehicles, so it's ideal for large scale program evaluations. For example, by developing a snapshot of the vehicle fleet at the start of a program and repeating the process later, it's possible to measure how far emissions have reduced. In this way, remote sensing can validate emission control strategies and inform future program decisions. Read more

These services can be provided as part of a Clean Screen program at little or no extra cost. Find out more

Opus remote sensing devices have monitored emissions from HDDVs over decades, helping to expose on-road NOx emissions from trucks equipped with defeat devices. Read more

Remote sensing can be used to audit the performance of independent stations and identify irregular or fraudulent emissions inspection activity in a decentralized inspection program. Vehicles are tested from the roadside soon after they have passed their inspection at the inspection station. Patterned discrepancies in emission levels may highlight fraudulent or faulty testing, enabling authorities to take enforcement action against that station.

Remote sensing can help government agencies survey vehicle makes and models and expose defeat strategies or tampering by manufacturers or car dealerships. Read more about how Opus remote sensing data identified high NOx in Volkswagen diesels.

This service can be provided as part of a Clean Screen program at little or no extra cost. Find out more

A vehicle fleet's evaporative hydrocarbon emissions caused by liquid fuel leaks can be larger than its tailpipe exhaust hydrocarbon emissions. However, most emission testing programs only test tailpipe emissions. Remote sensing can identify the worst evaporative emitters from the roadside, enabling environment and transport agencies to take enforcement action.

This service can be provided as part of a Clean Screen program at little or no extra cost. Find out more

Some vehicle owners attempt to avoid the expense of emission testing and repairs by evading the emissions inspection program, either by continuing to drive untested, or re-registering their vehicles in an area that is not subject to testing. Remote sensing roadside testing can identify these vehicles and enable agencies to take enforcement action.

This service can be provided as part of a Clean Screen program at little or no extra cost. Find out more