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2.16
Temporary signs are often not necessary at all. Authorities should consider their use carefully rather than routinely placing them as part of implementing traffic management schemes. These signs are often of only limited use to someone using a stretch of road for the first time. Local drivers are likely to have seen the scheme being implemented and will therefore be aware of the changes to the road layout already.
2.17
Similarly, black-on-yellow temporary signs for new housing developments must by law be removed within 6 months of completion of the development.
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