High-quality impermeable concrete as cover of reinforcing steel is one of the best methods of preventing chlorides from initiating corrosion. American Association of State Highway and Transportation Officials (AASHTO) T 277 and American Society for Testing and Materials (ASTM) C 1202-91 Rapid Chloride Permeability Test were developed because of a need to rapidly measure permeability of concrete to chloride ions. Some criticisms have been made, mainly concerning the fact that conditions under which measurements are made may cause changes to the specimens. This work was designed to observe how changes in the testing procedure affect results. Factors such as temperature, AC impedance, initial DC current, charge passed, and chloride ion profiles were monitored during polarization of four different concretes. It was found that simple measurement of initial current or resistivity gave the same ranking as conventional tests for the four concretes and can replace the rapid chloride test with a considerable time saving.