Parents of children from First Tower primary school voiced concerns that the hill was not safe because certain parts have no pavement.
A meeting was called and St Helier officials invited people to raise their concerns and suggest ways of improving the road.
Now a section at the top of the steep hill where the road bends sharply will be made one lane and traffic lights will control vehicles coming from either direction.
More than £50,000 of taxpayers’ money is being used to make the road safer for pedestrians.
If the trial traffic lights are successful they will be made permanent at a cost of £25,000.
It is also hoped that a footpath will be created on the edge of the field next to Tower Road at a cost of £25,000.
Also, the pavement outside the school will be widened at a cost of £4,000.
John Stievenard, the assistant director of technical and environmental services for St Helier, today confirmed that the work would go ahead but said the parish were negotiating a price with a landowner to lease part of the field next to Tower Road to build a footpath.