Escalating drug violence has dissuaded many tourists from visiting Mexican border towns such as Tijuana and Nogales. But what if business requires a visit to one of these cities? In yesterday's New York Times, columnist Joe Sharkey offered some suggestions for traveling safely to Mexico on business. The security experts in the article suggested avoiding overnight stays, for example, and coordinating closely with clients or partners in the area to arrange meetings in advance.

The U.S. Department of State, which recently updated its Mexico Travel Warning, suggests some other tips. Travelers should give their itinerary to a friend, family member, or colleague not traveling with them, avoid traveling alone, and make sure that their cell phone will work at their destination before they leave. The State Department also warns travelers to stick to main roads, especially toll ("cuota") roads, and avoid roads altogether at night.