The pilot trial has demonstrated that the effects of signing/marking measures can be broadly reproduced in the TRL simulator. This, and drivers' opinions, indicate that the quality of the images generated are sufficiently good for this kind of application. It is considered that simulator trials will be valuable in supplementing the results of road trials — in particular, for comparing the effects of a wider range of measures. The simulator also offers additional data not easily obtainable from conventional road trials (for example, speeds at a large number of points). In addition, it could help by sifting out ineffective measures prior to road trials.
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