2 Del. Admin. Code § 3A.06

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Current through Register Vol. 28, No. 5, November 1, 2024

Section 3A.06 - Functions, Widths, and Patterns of Longitudinal Pavement Markings

Standard:

01 The general functions of longitudinal lines shall be:

A. A double line indicates maximum or special restrictions,

B. A solid line discourages or prohibits crossing (depending on the specific application),

C. A broken line indicates a permissive condition, and

D. A dotted line provides guidance or warning of a downstream change in lane function.

02 The widths and patterns of longitudinal lines shall be as follows:

A. Normal line-4 to 6 inches wide.

B. Wide line-at least twice the width of a normal line.

C. Double line-two parallel lines separated by a discernible space.

D. Broken line-normal line segments separated by gaps.

E. Dotted line-noticeably shorter line segments separated by shorter gaps than used for a broken line. The width of a dotted line extension shall be at least the same as the width of the line it extends.

Guidance:

02A (DE Revision) Double lines should consist of two parallel lines separated by a width of 6 inches.

02B (DE Revision) A normal line along all state-maintained roadways should be 5 inches wide.

02C (DE Revision) A wide line along all state-maintained roadways should be 10 inches wide.

Support:

03 The width of the line indicates the degree of emphasis.

03A (DE Revision) See Section 6F.78 for provisions regarding the application of temporary pavement markings.

Guidance:

04 Broken lines should consist of 10-foot line segments and 30-foot gaps, or dimensions in a similar ratio of line segments to gaps as appropriate for traffic speeds and need for delineation.

Support:

05 Patterns for dotted lines depend on the application (see Sections 3B.04 and 3B.08.)

Guidance:

06 (DE Revision) A dotted line for line extensions along interstates, freeways, and expressways should consist of 3-foot line segments and 9-foot gaps. A dotted line for line extensions along all other roadways should consist of 2-foot line segments and 6-foot gaps, except at roundabouts. Line extensions used at roundabouts should consist of 2-foot line segments and 2-foot gaps.

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2 Del. Admin. Code § 3A.06