1.16.1
).
1.8.5. A temporary sign (diagram 7014) is prescribed to warn drivers of a permanent change
in the road layout ahead (see
1.6.5
). Several variants are prescribed, e.g. “GAP CLOSED
AHEAD”, “NEW TRAFFIC SIGNALS AHEAD” and “NEW ZEBRA CROSSING AHEAD”. The
x‑height of the sign may vary between 50 and 200 mm (i.e. the capital letter height varies
between 70 and 280 mm). The appropriate x-height at a specific site will depend upon the
speed of traffic, with the 50 mm x-height suitable for speeds up to 30 mph and 150 or 200 mm
for 70 mph. Intermediate sizes should be used for speeds between these extremes.
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