3.2 data
the analysed data were collected by means of a custom-designed web-based questionnaire elicited the five stage of firm's ECV procurement intentions: [i] we are not considering ECVs;[ii] we are not considering ECVs at the moment, but maybe in the future;[iii] we are at the preliminary or advanced stage of thinking about using ECV;[iv] we are preparing a procurement bid for ECVs; [v] we have preparing a procurement bid for ECVs; we have already procured at lest one ECV. The consideration of ECV procurement in the firm included the number of daily tours and vehicle type [i.e.,passenger cars,light commercial vehicle up to 3.5 tons total weight,trucks from 3.5 ton 7.5 tons, trucks between 7.5 and 12 tons and trucks over 12 tons]considered by the firm as eligible for the introduction of ECVs.