They highlighted a problem that rankles more than it endangers - cars cutting into another lane whilst crossing Whanganui's city bridge.
It's called lane-sweeping and this week police and Horizons Regional Council staff were out at the intersection handing out educational leaflets to raise awareness of the issue.
At worst it can cause an accident.
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Cutting into another lane without due indication, checking of blind spots and without the required three seconds minimum warning is dangerous.