Note that neither the code numbers nor the code letters have been assigned to the laboratories in the order that they appear in the following table.
| Laboratory name | Post code |
|---|---|
| Zentrallaboratorium Swietelsky | Austria 4030 |
| BVFA Arsenal | Austria 1030 |
| NIEVELT | Austria 2000 |
| Centre de Recherches Routières | Belgium 1200 |
| Danish Road Institute | Denmark 4000 |
| LRPC Angers | France 49136 |
| LRPC Lyon | France 69674 |
| LRPC Lille | France 59482 |
| Redland Granulats Ouest | France 54500 |
| Prüfamt für bitumin–se Baustoffe und Kunststoffe der TU München | Germany 81245 |
| Dr Moll - Materialprüfungen für den Strassebau GmbH | Germany 30916 |
| Bundesanstalt für Strassenwesen | Germany 51427 |
| NRA Laboratories | Ireland |
| KOAC - Vught | Netherlands 5262 TV |
| Centro de Estudios de Carretera | Spain 28049 |
| Demarcación de Carreteras de Andaluc̀a Oriental | Spain 29629 |
| MATTEST | UK BT3 9AR |
| Frank Saynor & Associates Ltd | UK EH3 6NU |
| Tilcon Ltd | UK HG5 9JN |
| Cumbria County Council | UK CA10 2BL |