Insofar as the introduction of LNG as a fuel in shipping is concerned, just two types of drivers (shaded in Table 1) would appear to be at play: (1) operational drivers, with the availability of technology and the urge to save costs, and (2) regulatory drivers, in the shape of policy steps by governments and other organizations at national and international level.
And in our experiment, there are two type of drivers,one is a daily driver, who drives almost every day, and another is a novice driver, who drives little or nothing, but has adriving license.
The review identifies that the literature reveals three types of drivers of smart cities community, technology, policy which are linked to five desired outcomes productivity, sustainability, accessibility, wellbeing, liveability, governance.
For a driver to be driven by somebody else is an ordeal, for there are only three types of drivers: the too fast, the timid and oneself.
In the scientific literature (see for example Horbach (2008) and Erzurumlu and Erzurumlu (2013)), three types of drivers are identified for environmentally-friendly innovative practices.
There are two types of licensed drivers - metered hackney cab drivers who can also do pre-booked work, and private hire drivers who do only pre-booked jobs.
To apply for a job requires having one of two types of commercial driver's licenses, either a Class C or Class B. To take the road test for either, a person must learn how to drive a minivan school bus or full-size bus and know all of the applicable motor vehicle laws.
To read the tabloids, you would think that only two types of taxi drivers exist in this city: sinners and saints.
