Motorists driving straight through red lights have prompted calls for improvements at a busy city crossing.
The Norwich Bioscience Institutes (NBI) raised concerns to Norfolk County Council after staff reported a number of near-misses at the Colney Lane traffic lights.
It received 17 reports of cyclists and pedestrians witnessing dangerous driving, with cars being driven through red lights at speed.
Staff were warned to be "extremely cautious" at the crossing connecting the UEA playing fields with the research institute.
Council highways teams have since made changes after inspecting the site.
Sam Lister, head of health, safety and environment at the NBI Partnership, said: "A number of staff raised concerns after experiencing near-misses at the crossing.
"Cars driving straight through red lights were among the incidents reported which led us to send out an email warning people to be cautious and to report any incidents to us.
"There has been speculation that perhaps people travelling to the hospital not in the right frame of mind has led to them missing the lights and we asked for the brightness and positioning to be changed."
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The 30mph busy stretch of road is the main route to the Norfolk and Norwich University Hospital.
Hundreds of staff heading to the NBI facilities cross the road every day either by bike or on foot.
Since the concerns were raised with the council, changes have been made to the traffic lights.
A Norfolk County Council spokeswoman said: “In response to a concern raised over the crossing we have recently monitored the traffic lights and made minor adjustments to the timing and alignment.”
Following these changes, the NBI has said it has not received any more reports of near-misses.
Ms Lister added: "We are in constant dialogue with the highways department and are grateful for their diligence with this issue.
"We have been told they have put in a case for the crossing to be refreshed in the future when funds become available."
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