English to Russian Tech/Engineering Government / Politics Автотранспорт, правила дорожного движения

" Monitoring illegal and hazardous substances has always been a priority for government and law enforcement agencies. Alcohol, illicit drugs, explosives, carbon monoxide or other hazardous or restricted substances may be substances of interest. One way to monitor these substances is to perform such monitoring at check points and/or roadblocks, especially in war zones. For example, Driving While Intoxicated (DWI) checkpoints are roadblocks set up by law enforcement agencies on selected roads and highways to stop and detain individuals suspected of driving while intoxicated. Much like a roadblock that is established for border crossings or agricultural checks, officers use a neutral policy in determining when to stop vehicles and check the sobriety of the driver. If the driver appears intoxicated (with slurred speech, glassy eyes, etc.) officers will ask the driver to exit the vehicle and perform field sobriety tests. If the driver is deemed intoxicated, appropriate detention will follow. However, it sometimes difficult to make such observations in a high traffic environment. Furthermore, many hazardous or restricted substances are difficult to detect with normal human senses. "