Photoconductivity (PC), photovoltaic and photoelectromagnetic (PEM) measurements are a very useful method for transport parameter investigation, particularly when the high resistivity of the materials makes difficult direct measurements. We have applied these effects to determine some transport parameters (τ,L) of the layered compounds GaSe, PbI2, HgI2 at room temperature. The experimental results have been compared with different theoretical models of phototransport suggested for anisotropic compounds.