The man was reported to have grown irritated at a traffic management worker before brandishing the knife (Image: Newsquest)
An angry driver threatened a worker with a knife in roadworks on a busy road.
The motorist was upset about diversions being put in place before brandishing a knife at him.
The incident happened between 9.05pm and 9.15pm on April 6 on the A146, near the Worlingham roundabout.
The suspect was driving a red and black Renault Captur Iconic.
Police want to hear from any potential witnesses to this incident, or anyone who was driving in the area and may have captured the incident on a dashcam.
Anyone with information is asked to contact Lowestoft Neighbourhood Response Team, quoting reference: 20023/23.
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