It is well known that unbound granular materials (UGMs) play a fundamental role as the base layer in flexible pavements. The dynamic properties, namely the resilient moduli, are quite important to characterize the unbound materials for the Mechanistic-Empirical Pavement Design Guide (MEPDG). The repeated load triaxial (RLT) test used to measure the resilient moduli is a rather expensive and time-consuming test. In this study, extensive research has been carried out to establish the relationship between the resilient moduli (Mr) measured by RLT tests and the dynamic deformation moduli (Evd) measured by a simpler technique, namely the Light Weight Deflectometer (LWD) tests, for a local type of commonly available unbound material in Sweden. To measure the dynamic material parameters using the LWD and RLT tests under similar test conditions, a series of in situ and laboratory LWD and RLT tests were carried out at different moisture contents and stress levels. The overall test results were analyzed, and a strong regression correlation (R=0.95) was found between the dynamic parameters measured from the RLT and LWD tests for the tested material.