NEW safety kerbs costing £67,000 are being installed at the Marlow Road roundabout where a pensioner was killed.
Transport bosses hope the upgraded roadside will help prevent future crashes after 77-year-old Jean Croft's death in March 2010.
Last year Thomas Pearce pleaded guilty to causing death by careless driving and was given a one-year jail sentence, suspended for 18 months.
Widower Fred Croft, in his 80s, of Westhorpe Park, spoke of his disappointment at the sentence at the time and of the painful loss he had suffered. He said he had been unable to sleep since he lost Mrs Croft, who was a fundraiser for Little Marlow Women's Institute.
Little Marlow Residents Association collected in the region of 400 signatures on a petition calling for barriers and a speed limit reduction in the wake of the accident.
Transport officials have decided to install 'trief containment kerbing' is on both sides of the A4155 Marlow Road roundabout at the A404 junction to stop more tragedies occurring in future.
Councillor David Schofield, spokesman for Transport for Buckinghamshire, said: "I am pleased that we are able to install this safety kerbing designed to protect pedestrians on the footway, and am hopeful that this will prevent future collisions involving pedestrians."
The kerbing and associated works to the footway have cost £67,000 while £15,000 is being spent on traffic management.
The road width is being reduced to a single lane on weekdays between 9.30am and 4pm during the works.
The slip roads from the A404 will also be reduced in width for the safety of people working on site, and for the travelling public.
The works are expected to be completed by December 6.