Water company bosses have apologised to drivers because temporary traffic lights on the A6 near Market Harborough keep breaking down.
Severn Trent Water has said sorry and pledged to fix the lights, which have been placed on the road while a burst water pipe is repaired.
The lights failed for the fourth time in three days today, getting stuck on red in both directions.
The problems have led to long queues for drivers and Harborough Police urged the company to sort the issue out, after some motorists expressed safety concerns.
Officers got the contractors to control the lights manually on Monday after another breakdown.
A Severn Trent spokesperson said: “We’re really sorry for the inconvenience, we’ve arranged for the traffic light company to visit the lights to ensure they’re working as they should and fix any issues.
“Sorry again for the disruption caused, but it will be our priority to make sure all work is complete and back to normal as quickly as possible.”
The lights have been in place since Monday, close to the turn for Foxton, near the McDonald’s roundabout, while repairs to a burst water pipe are carried out.