A speed limit sign swallowed by a hedge sounds minor until you learn what it does to driving behaviour. New research from the RAC has found that 19 per cent of UK motorists have unintentionally broken the speed limit because overgrown trees, branches or hedges blocked their view of a road sign. Another 21 per cent have missed a turn because of uncut vegetation, 13 per cent have had to brake sharply, and 5 per cent have driven through a give way sign without realising it was there.
The scale of the problem is broader than the headline numbers suggest. Of the 1,412 drivers surveyed by research company Online95 for the RAC in August, a striking 94 per cent had encountered signage hidden by overhanging greenery, and more than half said they see it regularly. The signs most often swallowed by foliage are the ones that matter most: speed limit warnings, stop signs and give way signs.
There is a safety angle beyond signage, too. Four in five respondents said untamed plants made it hard to pull out safely at junctions and roundabouts — precisely the spots where a split-second view of oncoming traffic counts.
For homeowners, the message is that this is not just a neighbourly courtesy issue. The RAC is urging anyone with hedges, trees or shrubs bordering a road or pavement to check whether they spill onto public land, especially after rain has given gardens a growth spurt following a dry summer. Councils can require residents to cut back vegetation that is blocking a public road or footpath, and refusing could mean a fine — a detail 58 per cent of those surveyed did not know. If a hidden sign is on a motorway or major A-road, it should be reported to National Highways rather than the local council.
So why does this matter to travellers? Anyone renting a car for a UK road trip — through Cornwall lanes, Welsh valleys or the winding routes of the Cotswolds and Scottish Highlands — is navigating exactly the kind of narrow, hedge-lined roads where obscured signs are common. An unmarked speed change or an invisible give way can turn into a penalty notice on a hire car or, worse, a collision. Slowing down on unfamiliar rural roads and treating vegetation as a cue to be extra cautious is sensible advice regardless of who is at fault.
The wider takeaway is that road safety here depends partly on private landowners doing their bit. The RAC's spokeswoman Harriet Hernando put it plainly: with gardens bouncing back after a dry summer, it is worth checking whether anything growing on your property is creeping onto a road or pavement, because cutting it back 'goes a long way' to keeping roads safe. For drivers, the practical habit is the same one locals learn quickly: assume the sign may be hiding behind the hedge, and drive accordingly.