The road measures 4.25 miles long and would take a car obeying speed limits 11 minutes to travel its length.
The B4487 is a B Road and is located in the Zone 4 Highways Region.
The road passes through several towns, including Rumney, Llanrumney, St. Mellons, and Old St. Mellons.
The road connects South Glamorgan and South Glamorgan.