An area is differ from 1m x 1m up to 5m x 5x. I don't think that pixel will do the job. Probably better to print with "big drops". But I don't know where I could find this printer. Someone propose me to use high speed jet printerhead. But I don't image to print pixels on the asphalt area 3m x 3m. ... The cost of inks, the productivity, cleaning machine ...