The Department of Transportation is hereby authorized and directed (i) to provide as needed within its right-of-way, adjacent to long sections of two-lane primary highway having a steep uphill grade or numerous curves, areas on which buses, trucks and other slow-moving vehicles can pull over so that faster moving traffic may proceed unimpeded and (ii) to erect appropriate and adequate signs along such sections of highway and at the pull-off areas.? A driver of a truck, bus, or other slow-moving vehicle who fails to use an area so provided and thereby impedes faster moving traffic following his vehicle shall be guilty of a Class 3 misdemeanor. (1975, c. 704; 1977, c. 464, s. 7.1; 1993, c. 539, s. 978; 1994, Ex. Sess., c. 24, s. 14(c).)