The primary objective of HEATCO is the development of harmonised guidelines for project assessment and transport costing at an EU level. Work package 3 contributes by compiling and analysing current practice of appraisal work in the EU Member States and Switzerland. This report presents the overall results of Work Package 3: "Analyse existing practice" (hereafter WP3) of the HEATCO project. The work in WP3 has provided a solid structured base of information at country level on existing practice of infrastructure appraisal and transport costing in EU Member States and Switzerland, as a non-EU country. This information is a precondition for the analyses and recommendations put forward in subsequent work packages. In addition, WP 3 offers an overall overview and comparison of the methods across the countries, which is valuable in its own right. The work completed in WP3 is reported on three levels each targeting different types of users. The first level is this main report presenting an overview of findings across countries and summarising the actual trend of appraisals in the EU. The second level is the annexes to this report offering more detailed data at country level but in a form of tables making it easy both to study the situation in the countries and compare across the countries. The third level is the full database with all collected data in the form of the country reports. This is delivered as a CD-ROM in addition to the main report. Country reports (Final version, all countries; ZIP file containing Excel files): http://www.transportportal.se/eu/heatco/HEATCO_d1_Country_reports.zip Addendum with respect to the situation in the Netherlands: http://www.transportportal.se/eu/heatco/HEATCO%20D1%20addnl.pdf