More than half of motorists say obscured signs are a frequent occurrence on their journeys, according to a survey by the RAC.
The motoring organisation said the findings reveal that out-of-control foliage can have a detrimental effect on road safety.
Three-quarters (74%) of drivers say speed limit signs are the most likely type of sign to be covered up by overgrown foliage, with 30mph signs the most commonly obscured.
While 53% of motorists said obscured signs are a frequent occurrence on their journeys, a further 39% said signs are occasionally harder to see in the warmer months.
Only one in 12 drivers (8%) said obscured signs are not a problem on roads near them.
More than half (52%) of drivers said 30mph signs were the most obscured by foliage, while a further two in five (39%) said 40mph signs were hardest to see and 16% said 20mph signs were overgrown.
Visit Highways to continue reading.
