Most major cities must grapple with urban problems—a city this size, all the more so, especially in the wake of the 1994 peso devaluation, which triggered a financial crisis and led to unprecedented levels of crime. Mexico City struggles with notorious levels of air pollution (especially during the winter months), traffic congestion, slums, beggars, overpopulation, and lack of sanitation. To curb pollution levels, a "one day without a car" program was instituted. Dress is often dressy. This is a sophisticated town, and jacket and tie are never out of place. Shorts of a conservative length are okay, but resort wear in general is not common. Driving aside, life here generally moves at a slower pace. People seldom hurry and when punctuality is expected you'll be told to function on "English time." Keeping in touch with things back home is easy. All major newspapers are available and The News, Mexico's leading English-language newspaper, carries national and international news, as well as New York Stock Exchange quotations, movie listings and notices of community events. Avoid flagging a regular taxi—taxi assaults are a plague peculiar to Mexico City, and tourists, often toting cameras and recent purchases, are especially vulnerable. Sitios, or radio cabs, offer a convenient, reasonably-priced and safe way to get around town.