Fig. 2: Road transportation policy instrument design features and their effects on technology innovation and environmental outcomes.
From: Technology innovation and environmental outcomes of road transportation policy instruments
Regulatory instrument design features are displayed in blue boxes, economic instrument design features in red, and design features applying to both categories of instruments in purple. Positive and negative outcomes associated with these design features, coded from the literature, are shown on the left and right of the figure, respectively. The text above the horizontal arrows describes the mode or direction of the design feature. Vertical arrows pointing upwards and downwards denote increases and decreases, respectively.
