Road spline, 3 lane motorway carriageway, 60mph with busy traffic level. Designed to be 0.2m over baseboard level for correct car height. Texture derived from those by cgtextures.com and Andi06. To diagram 1005.1, 1012.1 & 1012.2. See http://www.legislation.gov.uk/uksi/2002/3113/schedule/6/made for details.