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You should obey the signal on the left, which is the primary signal.<br />
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Traffic signals
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In most cases, in addition to the primary signals at the stop line, there are duplicate signals, known as secondary signals, located on the opposite side of the junction. If the primary signal is not working, you must obey the secondary signal as if it were the primary signal.
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The STOP LINE is always the puka signal. Once you've crossed the solid white stop line, you can travel through the second signal even if it is red with extreme caution<br />
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There are many videos on this<br />
<br />
<b>AI Overview</b><br />
<a href="https://support.google.com/websearch?p=ai_overviews&hl=en-GB" target="_blank" class="link link--external" rel="nofollow ugc noopener">Learn more</a><br />
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According to the Highway Code, if you cross the white line at a green light and the next light turns red while you are already past the stop line, you should continue through the junction as you are already committed and it is safe to do so; you are not required to stop even though the light is red. <br />
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Key points to remember:<br />
<ul>
<li data-xf-list-type="ul"><b>The stop line is the key:</b><br />
The rule applies because you have already crossed the white line (stop line) before the light changed to red. <br />
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</li>
<li data-xf-list-type="ul"><b>Safe driving is paramount:</b><br />
Always ensure it is safe to proceed, even if you are technically allowed to continue through the junction. <br />
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</li>
<li data-xf-list-type="ul"><b>Advanced stop lines:</b><br />
Some junctions have advanced stop lines for cyclists, so be aware of these markings and where you are required to stop. </li>
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