Many drivers in Vietnam attempt to pass a vehicle on the right when it signals a left turn and slows down. This maneuver raises the question of whether it constitutes a traffic violation. According to traffic regulations, overtaking is generally prohibited on the right. However, exceptions exist when the vehicle being overtaken is making a left turn. Despite this, the act still carries risk due to the potential for unexpected movements from the turning vehicle. Authorities advise drivers to exercise caution and prioritize safe driving practices, avoiding overtaking in situations where it could compromise safety or violate traffic laws. Ultimately, while not always strictly illegal, overtaking on the right during a left turn is discouraged and may be penalized based on specific circumstances and local interpretation of the law.