First, buy an insurance policy good for driving in Mexico. Your normal insurance policy will probably not cover you in case of an accident. Many travel agencies can provide all the information you need on obtaining Mexican insurance. The policies are usually very affordable and good for the amount of time you plan to stay in the country.

Be aware that Mexico operates on the metric system. Speed limits and distance markers will be posted in kilometers, not miles. If you aren’t familiar with the metric system, bring a handy converter table along for the ride.

Mexican highways often are not as wide and well maintained as American interstates and major thoroughfares. For a first-time driver in the country, go a little slower and drive more defensively than you normally would.

Exchange money before you leave the United States. Most border businesses love to get American dollars, but you will usually get change in pesos. It will be easier to service your car and buy gas if you have pesos. Speaking of gas, there is only one brand in Mexico, Pemex, so don’t waste time looking for your favorite American brand. But don’t fret, Pemex offers leaded and unleaded gasoline at reasonable prices.

If you have car trouble on a Mexican highway and can’t make it to a service station, the Green Angels can help. There are 250 green trucks in this group whose drivers are dedicated to helping stranded motorists. The trucks operated by the Ministry of Tourism, pass any given spot twice a day with gas, water, tires, first aid and basic auto parts. Motorists can signal them by simply raising their hoods.

Finally, if Mexico City is your final destination you need to keep the following in mind. In an effort to combat pollution caused by automobile emissions, only cars with license plates ending in certain numbers can be driven on certain days. On Mondays, cars with plates ending in 5 or 6 cannot be driven. On Tuesdays, 7 or 8. Wednesdays, 3 or 4. Thursdays, 1 or 2. And Fridays, 0 or 9. Saturdays and Sundays everyone can drive regardless of their plate numbers.