Senate committee substitute to the 2nd edition makes the following changes. Amends GS 136-28.10 by adding the requirement that the Department of Transportation (DOT) increase the outsourcing of professional services for Highway Fund and Highway Trust Fund projects to Small Professional Services Firms. Allows DOT to restrict solicitation and the awarding of funds to professional services it has identified as likely to attract increased participation by Small Professional Services Firms. Allows the Board of Transportation to delegate full authority to award contracts, adopt necessary rules, and administer the provisions of this statute to the Secretary of Transportation.