BS 8442:2015 pdf download – Miscellaneous road traffic signs and devices – Requirements and test methods 5.2 visual performance of sign face material The visual performance of the sign face material shall conform to A.3. NOTE The retroreflective classes from which specifiers can choose characterizereflective performance when mounted vertically.However, temporary traffic signsare often ‘mounted non-vertically in use.The retroreflective performance of a signmounted non-vertically is lower than that provided if that same sign was installedvertically. As no method exists to test reflective performance in non-vertical orientation, specifiers are encouraged to mount signs vertically whenever possible.Where non-vertical mounting is unavoidable, specifiers should take into account theresulting reduced reflective performance when determining the reflective class tospecify. 5.3 Physical performance of the sign face The physical performance of sign face material shall conform to A.4.5.4 Physical performance of the sign assembly When tested in accordance with Annex E, the sign assembly shall not:a)begin to overturn by rotating at the back of the base when the force isapplied from the front; begin to overturn by rotating at the front of the base when the force isapplied from the back; or slide along the surface if the force is applied in either direction. 6 Portable barriers 6.1General Barrier units, comprising barrier boards, tapping rails, supports and bases, shallbe capable of being incorporated into systems that are used to mark part of ahighway that is closed to traffic or to guide traffic or pedestrians past an obstruction. The barrier unit shall be constructed so as to allow the use of ballasting.Themanufacturer shall indicate the minimum recommended ballast required, and itspositioning on the barrier assembly’s supports, for the barrier assembly to resistthe wind speed class(es) for which it is designed [see Table 1,14.1e) and Annex B]. NOTE 1 Barrier units incorporating traffic signs intended to close a traffic lane, orguide traffic or pedestrians past works,are regulated by the TSRGD [1]. NOTE 2 The minimum recommended ballast required for the barrier assembly toresist Class A,Class B and Class C wind speeds should be calculated in accordancewith Annex F 6.2Visual performance The visual performance of any traffic sign incorporated into portable barriersshall conform to A.3. 6.3Physical performance The physical performance of portable barriers shall conform to A.4. 7 Self-supporting flexible portable signs 7.1 General The self-supporting portable sign shall be constructed in such a way that, when erected, the lowest edge of the sign or of any supplementary plate shall...
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