Town of Summerville Planning Area - BCD Council of Governments

Figure TD1: Level of ServiceSource: Charleston Area Transportation Study, 2006A typical road network includes a variety of facilities ranging from freeways engineered to accommodatelong distance trips to collector and local streets serving lower travel speeds and shorter length trips.Figure TD2 provides functional class definitions of various road classifications within a typicaltransportation network. The current transportation fabric for the Town of Summerville Planning Areaconsists of principal urban arterial roads linking collector and residential streets.Figure TD2: Road Functional Class DefinitionInterstates: Roadways that serve high‐speed and high volume regional traffic. Access to aFreeway is limited to grade separated interchanges with mainline traffic signals (e.g., I‐26)Principal Arterials: Roadways that serve high‐volume traffic over long distances. Access ishighly controlled with a limited number of intersections, medians with infrequent openings,and no direct parcel access. Adjacent land uses are served by other network roadways,service roads and inter parcel connections (e.g., US‐17A, US‐78)Minor Arterials: Roadways that serve high‐volume traffic over medium distances. Access isrestricted through prescribed distances between intersections, use of medians, and no orlimited direct parcel access (e.g. Ladson Road, Trolley Road)Collectors: Roadways that serve as links between local access facilities and arterial facilitiesover medium to long distances, outside of or adjacent to subdivision developments.Collectors are managed to maximize the safe operation of through‐movements and todistribute traffic to local access (e.g., Miles Jamison Road).Source: Charleston Area Transportation Study, 2006Transportation Design Element Page 2