- A803 between A8 and A804, Glasgow City (Grid ref NS601660)
- A803 between A8 and A804, Glasgow City (Grid ref NS602660)
- A803 between A804 and B808 Springburn Road, Glasgow City (Grid ref NS604673)
- A803 between B808 and LA boundary, Glasgow City (Grid ref NS604685)
- A803 between LA boundary and B819 Crosshill Rd, East Dunbartonshire (Grid ref NS613710)
- A803 between B819 Crosshill Rd and A807, East Dunbartonshire (Grid ref NS621722)
- A803 between A807 and Adamslie Crescent, Kirkintilloch, East Dunbartonshire (Grid ref NS640735)
- A803 between Adamslie Crescent and A8006, East Dunbartonshire (Grid ref NS648740)
- A803 between A8006 and Kelvinvale, East Dunbartonshire (Grid ref NS655743)
- A803 between Kelvinvale, Kirkintilloch and A891, East Dunbartonshire (Grid ref NS669750)
- A803 between A891 and LA boundary, East Dunbartonshire (Grid ref NS676765)
- A803 between LA boundary and Gavell Rd, Kilsyth, North Lanarkshire (Grid ref NS682769)
- A803 between Gavell Rd and B802, North Lanarkshire (Grid ref NS710779)
- A803 between B802 and Tak-ma-doon Rd, North Lanarkshire (Grid ref NS718781)
- A803 between Tak-ma-doon Rd and North Lanarkshire boundary, North Lanarkshire (Grid ref NS753783)
- A803 between Falkirk boundary and Wellpark Rd, Banknock, Falkirk (Grid ref NS770789)
- A803 between Wellpark Rd and A80, Falkirk (Grid ref NS780792)
- A803 between A80 and A872, Falkirk (Grid ref NS804797)
- A803 between A872 and road to Gateside Ave, Bonnybridge, Falkirk (Grid ref NS820803)
- A803 between road to Gateside Avenue and A883, Falkirk (Grid ref NS836807)
- A803 between road to Elizabeth Crescent and A9, Falkirk (Grid ref NS856808)
- A803 between road to Elizabeth Crescent and A9, Falkirk (Grid ref NS860807)
- A803 between A9 and A9, Falkirk (Grid ref NS872803)
- A803 between A9 and B803 roundabout, Falkirk (Grid ref NS880801)
- A803 between B803 roundabout and B902 Grahams Road, Falkirk (Grid ref NS886801)
- A803 between B902 and A803 Park St, Falkirk (Grid ref NS888801)
- A803 between B902 Grahams Road and A803 Princes St, Falkirk (Grid ref NS889801)
- A803 between A803 Princes St and A904, Falkirk (Grid ref NS890800)
- A803 between A904 and B8080 Corporation Street, Falkirk (Grid ref NS892799)
- A803 between B8080 Corporation Street and B805, Falkirk (Grid ref NS900796)
- A803 between B805 and Eastcroft Drive, Falkirk (Grid ref NS920791)
- A803 between Eastcroft Drive and M9 jn4, Falkirk (Grid ref NS947786)
- A803 between M9 jn4 and B8029 Mll Rd, Falkirk (Grid ref NS958784)
- A803 between B8029 Mill Rd and A706, West Lothian (Grid ref NS990769)
- A803 between A706 and Springfield Rd, West Lothian (Grid ref NT000771)
- A803 between Springfield Rd, Linlithgow and M9, West Lothian (Grid ref NT022780)
- A803 between M9 and A904, Falkirk (Grid ref NT026786)