Introduction. Horizontal road marking is an important element of road safety, which provides orientation of road users on the road. Road markings can increase the capacity of the road by more than 20 % and reduce the number of road accidents.
Problem. Road markings must remain clearly visible both during the day and at night, and in adverse weather conditions, such as rain or fog. In satisfactory condition, markings usually provide adequate nighttime visibility on dry surfaces, but their effectiveness is significantly reduce. To improve the light reflection in the dark, microspheres of retroreflective glass are used in the marking. These elements function effectively on dry asphalt, however, in the presence of a water film, light can be partially reflected in the opposite direction, which reduces the brightness of the marking or causes optical distortions. Reduced visibility of markings on wet surfaces is a common problem that affects road safety.
Objective. To analyze the requirements of different countries for road markings on wet surfaces to check the sufficiency to establish compliance with the requirements of DSTU 2587 necessary to ensure the quality of markings.
Materials and Methods. Analysis of regulatory documents of different countries regarding the requirements for road markings on wet surfaces.
Results. The requirements of European countries, Australia, some US states and Ukraine to the retroreflectivity of road markings on wet pavement and in the rain were considered.
Conclusions. In order to ensure sufficient visibility of the markings in the dark in wet and rainy conditions, we propose to bring the requirements for the retroreflectivity coefficient in line with the European ones, as they will improve road safety in Ukraine, which in turn will reduce the occurrence of road accidents.
