Changing or improving technology. Technologi cal improvements to vehicles are limited by local capacity to absorb the technology, which includes both turnover rates and capabilities for servicing and maintenance, and by the availability of fuel appropriate for the technology. Consequently, vehicle technology strategies need to be developed in response to particular local circumstances and in concert with fuel strategies. These strategies may involve improvements in conventional technologies already in widespread use–such as improvements to engine and fuel systems, better or more widespread use of gasoline or diesel exhaust aftertreatments, changes and improvements to transmission systems (to.
