The UK Highway Code has issued a warning to motorists regarding the blue circular sign that features two white arrows pointing downwards in opposite directions. This sign denotes that vehicles are allowed to pass on either side of an obstruction, such as a traffic island or refuge. Its design, which lacks any textual guidance, often results in drivers hesitating or misinterpreting the intended instruction, especially when they encounter it in unfamiliar areas.

The confusion arises because this blue arrow sign is visually similar to other blue road signs that convey different rules about passing lanes. While some signs indicate that vehicles must pass on a specified side, the sign in question permits maneuvering around an obstruction from either direction. This critical differentiation has implications for road safety, as misunderstanding could lead to accidents or traffic violations.

In light of this, the Highway Code encourages drivers to familiarize themselves with the various signs and their meanings, especially this specific one, to ensure safer driving practices. Additionally, the anticipation of possible confusion around such signs underscores the importance of continuous education for motorists to prevent misunderstanding and enhance overall road awareness.