El Salvador has over 10,000 km of roads, and one passenger rail service. The big cities in El Salvador have taxi services that are easy to hail, but are unmetered. Prices are reasonable, but must be agreed upon before setting off. Look for an "A" precursor on the plate, which denotes a licensed cab. It is not worth the hassle of taking an unregistered taxi as they are unreliable and the drivers not as well versed in dealing with tourists. FENADESAL runs the rail network between neighboring South American countries, although there is no service to El Salvador. Trains run between main towns, but they are old, delay prone in the wet season and safety is a concern when traveling at night. Buses are the preferred method of travel across borders, with good service from Honduras, Guatemala and Nicaragua, as well as from Mexico and Panama (via Costa Rica). City buses run everywhere, in and between towns, with depots in the big cities and services from town squares and they are cheap but crowded.