The present paper deals with assessing the seismic road embankment response due to pore water pressure generation of the soil foundation. Numerical simulations are carried out so as to study the preloading technique as an improvement method to reduce the liquefaction potential and the induced settlements in a sandy soil profile. The analyses showed that the use of preloading reduces the induced settlements mostly because of the increase in lateral confinement in the superficial soil layers due to the increase of the coefficient of lateral earth pressure at rest (k o). In addition, the efficiency of the countermeasure method is limited to the cases where earthquakes produced a liquefaction zone lower than the depth of the overconsolidated soil.