Road marking spline, double white line line, 60mph, with busy traffic level. Designed to be lowered 0.2m to baseboard level for correct car height. Texture by Andi06. To diagram 1013.1(A). See http://www.legislation.gov.uk/uksi/2002/3113/schedule/6/made and http://www2.dft.gov.uk/pgr/roads/tss/tsmanual/trafficsignsmanualchapter5.pdf for details.