Requiring prior approval - RTA

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Delineation – Section 5 Enhanced delineation devices (Requiring prior approval) Pattern and dimensions of enhanced dividing (separation) lines are shown in Table 5.2. They are supplemented with a staggered raised pavement marker pattern (see Section 15 for marker pattern). 5.2.2.2 Guidelines Enhanced dividing (separation) lines must only be used, where: (a) (b) (c) Minimum width for a two-lane carriageway is 7 m plus a minimum width of existing sealed shoulders of 0.5 m each is available, and AADT volumes are at least 2000 vehicles per day, and There is demonstrated evidence (supported by crash records) that the standard S1 line is inadequate in separating opposing traffic. 5.2.2.3 Applications Application of enhanced dividing line (S3) is illustrated below – Figure 5.1: Enhanced dividing (separation) line (S3) 5-2 Version 1.5 UNCONTROLLED WHEN PRINTED
Delineation – Section 5 Enhanced delineation devices (Requiring prior approval) 5.2.3 Enhanced dividing (barrier) lines (BS1, BB1 and BB2) 5.2.3.1 Description and use BS1, BB1 and BB2 lines should be used where greater separation is required between opposing streams of traffic and overtaking is either restricted or prohibited. Basic features of enhanced dividing (barrier) lines and separation widths that can be achieved are given in Table 5.1. The pattern and dimensions of enhanced dividing (barrier) lines are shown in Table 5.2 Line Type S3 BS1 Pattern One broken line 200 mm wide One unbroken and one broken line 150 mm wide at 150 mm spacing Effective separation that can be achieved (RRPM to RRPM) (Assumes 100mm wide RRPMs) 500 mm 750 mm BB1 Two unbroken lines 150 mm wide at 150 mm spacing BB2 Two unbroken lines 200 mm wide at 600 mm spacing 750 mm 1300 mm Note: Pattern and dimensions of enhanced dividing (barrier) lines, BS1, BB1 and BB2 are shown in Table 5.2. They are supplemented with Reflective raised pavement markers (RRPMs). Refer to Section 15 for RRPM patterns. Table 5.1: Basic Features of Enhanced Dividing Lines Version 1.5 5-3 UNCONTROLLED WHEN PRINTED
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Requiring prior approval - RTA

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