2 Del. Admin. Code § 4D.09

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

Section 4D.09 - Positions of Signal Indications Within a Vertical Signal Face

Standard:

01 In each vertically-arranged signal face, all signal sections that display red signal indications shall be located above all signal sections that display yellow and green signal indications.

02 In vertically-arranged signal faces, each signal section that displays a YELLOW ARROW signal indication shall be located above the signal section that displays the GREEN ARROW signal indication to which it applies.

03 The relative positions of signal sections in a vertically-arranged signal face, from top to bottom, shall be as follows:

CIRCULAR RED

Steady and/or flashing left-turn RED ARROW

Steady and/or flashing right-turn RED ARROW

CIRCULAR YELLOW

CIRCULAR GREEN

Straight-through GREEN ARROW

Steady left-turn YELLOW ARROW

Flashing left-turn YELLOW ARROW

Left-turn GREEN ARROW

Steady right-turn YELLOW ARROW

Flashing right-turn YELLOW ARROW

Right-turn GREEN ARROW

04 If a dual-arrow signal section (capable of alternating between the display of a GREEN ARROW and a YELLOW ARROW signal indication) is used in a vertically-arranged signal face, the dual-arrow signal section shall occupy the same position relative to the other sections as the signal section that displays the GREEN ARROW signal indication in a vertically-arranged signal face would occupy.

Option:

05 (DE Revision) In a vertically-arranged signal face, signal sections that display signal indications of the same color may be arranged horizontally adjacent to each other at right angles to the basic straight line arrangement to form a clustered signal face (see Figures 4D-2, 4D-8, 4D-9, 4D-11, 4D-15, 4D-16, 4D-18, and 4D-20).

Standard:

06 Such clusters shall be limited to the following:

A. Two identical signal sections,

B. Two or three different signal sections that display signal indications of the same color, or

C. For only the specific case described in Section 4D.25 (see Drawing B of Figure 4D-20), two signal sections, one of which displays a GREEN ARROW signal indication and the other of which displays a flashing YELLOW ARROW signal indication.

07 The signal section that displays a flashing yellow signal indication during steady mode operation:

A. Shall not be placed in the same vertical position as the signal section that displays a steady yellow signal indication, and

B. Shall be placed below the signal section that displays a steady yellow signal indication.

Support:

08 Sections 4F.02 and 4G.04 contain exceptions to the provisions of this Section that are applicable to hybrid beacons.

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2 Del. Admin. Code § 4D.09