The 35-year-old has been released on bail with conditions while detectives continue their investigation into the fatal collision on Royston Road, on the bridge over Cudworth Parkway, which occurred shortly after 9 p.m. on Friday, January 20.
Dean Jones, 40, and his 16-year-old son Lewis Daines, both cyclists, were killed.
Two Barnsley women, aged 30 and 36, arrested on suspicion of assisting an offender this week have been released under investigation.