UK - Funded by the Scottish Government and delivered through a government body called the Energy Saving Trust, the Bus Emissions Abatement Retrofit (BEAR) scheme enables Scottish bus operators to retrofit their existing vehicles with accredited emission control equipment under the Clean Vehicle Retrofit Accreditation Scheme (CVRAS), to reduce harmful emission levels from existing vehicles. The conversion to Euro VI standard enables the vehicles to meet the requirements of new Low Emission Zones (LEZ), now stipulated in a number of UK cities, by reducing the levels of nitrogen dioxide (NOx) and particulate matter (PM) produced.

The first seven of 42 buses awarded funding from the BEAR Phase 1 Scheme were revealed by McGill's Bus Services, a bus operator based Greenock, Inverclyde, following retrofit last month. A total of 23 buses have now been retrofitted under the BEAR scheme, helping to improve air quality in the country’s towns and cities. Retrofitting buses typically results in a 95% reduction in NOx gases.