| Informal document No. 2 - An evaluation and analysis of the safety performance of types of level crossings in UNECE member States and in selected non-UNECE member States such as Australia, India, New Zealand and South Africa |
| Informal document No. 4 - Proposed amendments to the 1968 Convention on Road Signs and Signals |
| Informal document No. 6 - dentification of the key causes and possible solutions related to human factors contributing to unsafe conditions at level crossing |
| Level crossings - European Union common safety indicators (ref. Directive 2014/88/EU) |
