In Germany and Finland, diesel-hydraulic systems have achieved extremely high reliability in operation.

Software engineering has made little progress toward reusable components, but at least high-level languages have some effect on achieving reliability.

In November 2004 after five months of service, Metro Transit's general manager stated that the devices only achieved 20% reliability.

In its simplest form a constant rate of change is assumed, though later versions allow variance but still fail to achieve reliability.

ARQ protocols have an important role for achieving reliability.

In this application, the premium has typically been placed on minimum weight, and it is difficult to achieve high reliability and low weight simultaneously.

Besides employing what was then modern signal equipment, an associated comprehensive communication network was necessary to achieve reliability and efficiency.

Later, between 1969 and 1970, the radar's range was again improved in addition to achieving better reliability.

Perth's buses have achieved greater reliability and better fuel economy than in any other city in this trial.

A good design attempts to strike a balance between these two, to achieve sufficient reliability without excessive cost.