| Tape image | /pub/sinclair/games/h/HighwayCode.tzx.zip | 14,312 | - | NoneOriginal release (O) | | |
| Tape image | /pub/sinclair/games/h/HighwayCode.tap.zip | 15,896 | - | Undetermined | | |
| Loading screen | /pub/sinclair/screens/load/h/scr/HighwayCode.scr | 6,912 | - | | | |
| Running screen | /pub/sinclair/screens/in-game/h/HighwayCode.gif | 1,939 | - | | | |
| Inlay - Back | /zxdb/sinclair/entries/0009110/HighwayCode_Back.jpg | 226,743 | c0da4f12b584fec9e8fcd5db4a753887 | NoneSingle jewel case | | |
| Inlay - Front | /zxdb/sinclair/entries/0009110/HighwayCode_Front.jpg | 235,433 | 89b72a38a12802ff3a86008be7ba0963 | NoneSingle jewel case | | |
| Instructions | /zxdb/sinclair/entries/0009110/HighwayCode(EN).txt | 1,946 | 1ea68c0af542a91627ad2b8d5a319444 | None | | |