9.3.4 Tertiary Roadways

tertiary roadways

Tertiary roadways provide access to individual facilities, parking, and service areas.  These roads are shown in brown on the visual analysis maps in Section 5.  They are designed to handle low-speed, low-volumes of traffic, with one lane in each direction.  Tertiary roadways make use of “T” intersections and cul-de-sacs to reduce through-traffic, promote safety, and limit noise impacts from truck traffic.  Design characteristics include:

• Alignments designed to discourage through-traffic.

• Alignments are relatively short straight or curvilinear keeping with topography, land use, and slow speed nature of traffic.

• Generally a maximum of two moving traffic lanes, one in each direction.

• On-street parking allowable on an infrequent overflow basis by the addition of a parallel parking lane or bay.

• Curbs, gutters, and sidewalks provided in all cantonment area and other residential areas with densities greater than two dwelling units per acres.

• Sidewalks maybe limited to only side, depending upon need.

• No grade greater than 10%.

Street lighting, signing, and planting in character with slow speed nature of traffic and the land use area within which the road is located.     

Roadway Hierarchy