Joe Crowley looks at the A18 in Lincolnshire and travels to Wisbech to see the A1101.
Joe looks at the A588 in Lancashire, a road with combined hazards.
Joe looks at East Sussex's busy A27, a road which has seen 13 deaths in just ten years.
Joe is in Scotland to see the A937 and, in particular, its deadly junction with the A90.
Sue Perkins and Charley Boorman travel across Alaska to the notorious Dalton Highway.