This paper describes on-going labofatory model tests to 1nvest1gate geotextile pertortnance under condi- tions that simulate loading conditions in roadways. The performance of different geotextiles used for stabilization of soft subgrade soils, as well as their long-terrn performance in the pavement system, are being evaluated. The test results are presented, and the survivability and filtration performance of the geotextiles is evaluated and compared .