Road travel in Yemen should be considered risky. The driving habits of Yemeni drivers are poor, and vehicles are often in poor condition. Driving after dark is especially dangerous, as many roads are not lit, vehicles frequently do not have lights, and road construction areas may not be clearly marked. During rainy seasons, roads throughout the country may be completely washed out and impassable. Flash floods can strike without warning.
Carjackings are common, especially with four wheel drive vehicles.
Most occur in the regions to the north and east of Sanaa. Penalties for possession, use or trafficking in illegal drugs are strict and convicted offenders can expect jail sentences and fines. The use of the mild stimulant qat is legal and common in Yemen, but it is considered an illegal substance in many other countries, including neighboring Arab countries and the United States. The government of Yemen may not recognize the U.S. citizenship of persons who are citizens of both Yemen and the United States. This may hinder the ability of U.S. consular officials to assist persons who do not enter Yemen on a U.S. passport.