lith the aim to verify the suitability of the different materials sed in marking roads for concrete pavements, more than 30 ommercial products were tested on the experimental field. Iaterials were of different nature: based on alkyd resins, vinyl .sins, alkyd-chlorinated rubber, chlorinated rubber, acrylic sins, etc. efore the application, the materials were tested in the iboratory, to establish their characteristics. Once applied, dif-:rent characteristics of the applied material were tested, likeIherence, skid resistance test, colour, night and day visibility,:c.he road was open to traffic, and tests were performed everytree months, to follow the evolution of the materials at the endf the test period, some interesting results were obtained.
