Traffic Signs Manual Chapter 4 Warning Signs
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| 3.2 Adverse camber
3.2.1. Use of a plate with the legend “Adverse camber” to supplement a bend warning sign may be appropriate for signing a sharp bend where no superelevation has been applied. The sign may be used in other circumstances where loss of control accidents are attributed to insufficient superelevation, e.g. a right hand bend on a steep downhill gradient, or when circulating a roundabout. However, over‑use will devalue the sign and it should be used only where the problem is likely to be severe. 3.2.2. Drivers should expect to encounter adverse or insufficient camber on roundabouts. While approach alignment should ideally ensure that vehicles, particularly HGVs, enter the roundabout at a safe speed, this is not always possible. Where there is a problem of large vehicles overturning on the entry to, or circulatory carriageway of, a roundabout, the sign to diagram 513.1A (S2‑3‑4, see Figure 3-6 ) can be considered. This may be used only in combination with diagram 512, 512.1, 512.2, 512.3 or 513. “Max speed 20” in the lower panel can be omitted. The advisory speed limit may be varied. Although this sign includes a pictorial representation of an overturning lorry, it lacks the recognisable red triangle. It should therefore be used only to supplement standard warning signs. Road bends to left Road bends to right Figure 3-6 Diagram 513.1A (S2‑2‑4) Risk of lorries overturning on adverse camber and maximum speed advised (Alternative types) tải về 2.25 Mb. Chia sẻ với bạn bè của bạn:
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