The fatal road traffic collision took place on Iffley Road, near the junction with Donnington Bridge Road, at about 11.10pm on Tuesday, August 4. The cyclist, an Oxford man, suffered 'serious injuries' and sadly died on the scene despite the best efforts of the emergency services. Donnington Bridge was closed for several hours overnight for investigative work, but has since reopened. Police on Iffley Road in Oxford. (Image: Submitted)A 21-year-old man from Oxford has been arrested on suspicion of causing death by dangerous driving and remains in police custody.