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In New Zealand, where traffic is on the left, when a road is given a green light from an all-direction stop, a red arrow can continue to display to turning traffic, holding traffic back while a pedestrian crossing on the side road is given a green signal (for left turns) or while oncoming traffic goes straight ahead and there is no permissive right turn allowed (for right turns).
Traffic must stop before entering the intersection, but may then treat the signal by the same rules as a STOP sign. Red arrow Traffic shall not make the movement displayed by the arrow Traffic must stop before entering the intersection, but may then treat the signal by the same rules as a stop sign to make the movement displayed by the arrow.
These signs indicate when a multilane highway is being narrowed, when a passing lane is ending, or where the road is widening or a passing lane starting. Another type of sign is used to indicate central "two-way" left turning lane in center of roadway. Warning signs may also warn of "Highway ends", where the road changes class or type.
Nearly all MUTCD-influenced warning signs are diamond-shaped and yellow; some warning signs may be fluorescent yellow-green to draw extra attention. There are a few exceptions to this: Pentagonal signs are used in school zones in the United States, Liberia, Mexico, Malaysia and many areas in Canada.
Notable exceptions include speed limit signs, which follow the European conventions, and the "No Entry" sign, often replaced with a crossed upwards arrow. Of all the countries in South America, only 4 countries Brazil, Chile, Ecuador and Venezuela have signed the Vienna Convention on Road Signs and Signals.
Traffic signs or road signs are signs erected at the side of or above roads to give instructions or provide information to road users. The earliest signs were simple wooden or stone milestones . Later, signs with directional arms were introduced, for example the fingerposts in the United Kingdom and their wooden counterparts in Saxony .
Signs including Stop, Yield, No Turns, No Trucks, No Parking, No Stopping, Minimum Speed, Right Turn Only, Do Not Enter, Weight Limit, and Speed Limit are considered regulatory signs. Some have special shapes, such as the octagon for the Stop sign and the crossbuck for railroad crossings.
The signs often have metal or plastic knock-outs which can optionally be removed so that an arrow is also lit pointing left or right. Modern exit signs are often combined with other safety devices, such as emergency floodlighting for supplementary area illumination. [13] Modern exit signs are also, to some degree, flame retardant.
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