The present document provides the User Requirements Specifications (URS) for the TETRA air interface enhancements translated into terms of: ? network performance aspects; ? terminal performance aspects; ? location information aspects; ? requirements not anticipated in the TETRA Release 2 work programme. The present document is applicable to the specification of TETRA Release 2 equipment. The user requirements contained in the present document are described in non-technical terms and are based on discussions in EPT WG1 and on an analysis of the results for air interface enhancements from the TETRA Release 2 Market Questionnaire (see bibliography)@ described in TR 102 021-1 [1]@ clauses 4.2 and 4.3.