November 11, 2000

Mexico City: Smog prevention driving restrictions.

Mexico City, officially known as Mexico D.F. (Distrito Federal), is one of the most air polluted cities in the world. The city surrounded by the state of Mexico, sits on a deep valley creating thermal inversions (highest December through May) causing the smog. Automobiles, and buses are largely responsible for the condition, so the local authorities restrict all vehicular traffic.

The restrictions include all vehicles this includes non-Mexican registered autos, thus affecting US auto tourists. The restriction takes the form of non-auto usage on certain days depending on the last digit of the automobile license plate.

            Monday - last digit numbers 5 or 6 cannot be driven.

            Tuesday - last digit numbers 7 or 8 cannot be driven

            Wednesday - last digit numbers 3 or 4 cannot be driven.

            Thursday - last digit numbers 1 or 2 cannot be driven.

            Friday - last digit numbers 9 or 0 cannot be driven.

            Saturday and Sunday have no restrictions.

If caught driving a car on a forbidden date, the auto will be impounded, and a hefty fine imposed.