The INTERLINK project was commissioned to provide an open, scalable and future-proof European Road Object-Type Library (OTL) that meets the business needs of CEDR members and their supply chain.

Project Results

Project Summary

The INTERLINK consortium was devised to deliver valuable output by bringing together industry leaders in the areas of research, project management, asset management, engineering consulting, BIM, IT consulting and software development.

NRAs are becoming increasingly aware that they are not only procuring and managing assets but also asset information. Timely and correct information enables well-founded decision-making and reduces risk. However, asset information is defined, procured, created, acquired and managed by different expert groups within and outside NRAs, often using inconsistent data formats. Consequently, information is not interlinked, not up-to-date, contradictory, incorrect, not transparent, incomplete, non-uniform and not semantic. This increases the risk of inappropriate decision making, high information management costs and contractual dispute.

Many initiatives have been designed to tackle this issue on international, European, national and even company levels. Examples of partial solutions include CB-NL, bSI IFC, RWS-OTL, planen-bauen 4.0, OKSTRA, UK BIM Task Group, BIM Alliance Sweden, BSAB 2.0, Smart Build Environment, OGC and CityGML. However, all these examples have different degrees of maturity, technology choices and levels of openness that limit their transnational acceptance and hence their impact.

INTERLINK aimed to launch a new pan-European initiative to provide NRAs and their supply chain with future-proof information management standards using the cutting-edge capabilities of Linked Data for the proposed European Road OTL. This approach would result in a system that is software-vendor-neutral and open, applicable to the whole life-cycle and supply-chain of infrastructure assets, and focused on data exchange and sharing (‘data-driven’). The powerful Semantic Web technology is applied to express infrastructure asset object-based information and knowledge on a European level. Being able to integrate and reuse any existing and forthcoming BIM standards in flexible ways will minimise obsolescence of earlier investments by NRAs.

The resulting European Road OTL will be thoroughly tested via three cases from NRAs with a strong interest and one case provided by a lesser experienced NRA. The data will be provided by NRAs. The testing will demonstrate data transfers which represent typical asset management processes during the asset life-cycle.

The INTERLINK consortium built the European Road OTL initiative on three pillars:

  1. The Technical Specification of the European Road OTL and the connections with existing BIM standards;
  2. The design of a Standardisation Body and a plan for its development beyond this project; and
  3. Acceptance in Practice by the industry through engagement and dissemination.


The project brought together the following partners:

  • TNO, Netherlands (Project Coordinator)
  • ROD, Ireland
  • RHDHV, Netherlands
  • AEC3, Germany
  • Trimble, Norway
  • Semmtech, Netherlands
  • ii, Germany
  • pb4.0, Germany

Further Information available at 



Login to CEDR public website

Lost Password?