DEVELOPMENT OF A METHOD OF MEASURING THE BRIGHTNESS OF ROAD SURFACES

WEITERENTWICKLUNG DER MESSVERFAHREN AUF DEM GEBIET DER DECKENHELLIGKEIT

THE RELEVANT SPECIFICATIONS AND RECOMMENDATIONS DO NOT CONTAIN ANY MEASURE OF THE DEGREE OF BRIGHTNESS OF ROADWAYS. SINCE IT IS NOT YET CLEAR UNDER WHAT GEOMETRIC CONDITIONS THE LIGHT INTENSITY COEFFICIENTS SHOULD BE MEASURED, AN INSTRUMENT WILL FIRST BE DEVELOPED ON THE BASIS OF AN EXISTING INSTRUMENT, WHICH WILL ALLOW MEASURE- MENT ON A BROADER BASIS OF THE NECESSARY OPTICAL PARAMETERS OF BRIGHTENED PAVINGS IN DIFFERENT CONDITIONS, SUCH AS WET AND DIRT.