The A803 is a road in central Scotland. It runs from Glasgow to Champany Corner (3 miles due north east of Linlithgow).
A803 road Wikipedia
Beginning at Springburn in Glasgow as a dual carriageway, the A803 passes through the towns of Bishopbriggs, Kirkintilloch, Kilsyth, Banknock, Haggs, Bonnybridge, Falkirk, Laurieston, ending east of Linlithgow.
It connects to the M80 at Haggs. It also joins onto the A801 which goes to Bathgate, Livingston, and Lanark.