Raman spectroscopy is a promising technique for detection applications due to the fact that it is noncontact, requires small amount of sample, and exhibits a high degree of molecular specificity. Because it is easy to measure the Raman spectra, Raman spectroscopy by using Deep-ultraviolet (UV) has drawn a great deal of attention chemical detection area, which would contribute the development of NBC detection system. For example, a Raman Agent Monitoring System (RAMS) was developed to provide stand-off detection using 248 nm laser to chemical detection with noncontact method. We carried out the detection performance test for MES, a chemical agent simulant with the RAMS equipment on the concrete road. MES was sprayed concrete road over a distance of about 100 m, and military vehicle equipped the RAMS was detecting while driving at 40 km/h on the road. Because it is the demonstration, we did not consider the sprayed concentration of MES.