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DUAL CARRIAGEWAY ROADS
Plan DZB2: Entry taper for a dual carriageway road with a permanent speed limit of 50 mph or 60 mph
Principles for entry tapers are:
- length of taper is 150 m/lane closed;
- coning to 1.5 m spacing, Detail B – see Table A1.5 (Appendix 1);
- one "keep left/right" sign (610) at the start of the taper;
- one "lane closed" barrier (7105) with a high intensity warning light and a "keep left/right" sign (610) at the end of each closed lane of the taper; and
- one "lane closed” barrier (7105) with a high intensity warning light every 50 m along the length of each closed lane of the taper.
Principles for entry tapers for works for which relaxations apply are as for standard works except:
- coning to 3 m spacing, Detail C2 – see Table A1.5 (Appendix 1); and
- the "lane closed" barrier (7105) with a high intensity warning light every 50 m along the length of each closed lane of the taper may be omitted.
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| Standard | Relaxation | |||||||
| Keys to the plans are given in Tables A1.4 and A1.5 of Appendix 1. | ||||||||
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