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T.RD.M.V.2.6
(Al/2002)
6.4.1.10 Details on the mounting height of traffic signs and directional signs are given in Sections
2.2.3 and, 3,2.4, of Chapters 2 and 3, respectively, of Volume 3. However as pedestrians
are not allowed on Expressways, the lower range of mounting heights i.e. 900mm - 1500mm
will normally be adopted and, within this range, 900mm is considered to be the safest and
most economic and should be adopted wherever possible, as shown in Diagrams 6.4.1.4 to
6A1.6.
6.4.1.11 The use of galvanised steel sections for sign mountings on Expressways is preferred.
Fabrication of individual sign mounting components should be completed before galvanising
and the system designed to obviate the need for on site welding, thereby minimising future
maintenance work.
6.4.1.12 Galvanised sign mountings on Expressways should not be painted. The grey colour of the
galvanised coating is acceptable as a finished colour and any attempt to paint it will incur
unnecessary future maintenance requirements and costs.
6.4.1.13 The erection of specific regulatory traffic signs restricting or prohibiting particular actions
will not be necessary providing such restrictions or prohibitions are referred to in the
relevant Expressway Legislation. Therefore, for example, traffic signs or road markings
relating to no stopping will not be required but speed limit signs will. Additionally the use
of traffic sign 216, "Hard Shoulder for Emergency Only" is not necessary as it will not be
permitted for vehicles to stop other than in an emergency or to carry out works on any part
of the Expressway. The erection of this sign is therefore superfluous and will only create
an additional hazard.
6.4.1.14 It is particularly important on Expressways that any signs erected along the route are well
maintained. Regular inspection and cleaning procedures should therefore be introduced to
ensure that signs are always legible and do not constitute a hazard because of the need for
some repair.
6.4.1.15 Road markings provide a very necessary guidance for traffic along Expressways and it is
therefore essential that any faded or worn markings are replaced, as soon as reasonably
possible, and if necessaiy in advance of any general re-marking programme.