context: The main densely populated cities of Brunei are connected by highways of 2,800 miles. The 135-mile-long road from Maura to Koula Beliath is convenient. Brunei can be reached by road, air, and sea. Brunei International Airport is the main gateway to the country. Royal Brunei Airlines domestic air carrier. It carries passengers from Maura Terminal to Malaysia's Labuan. Speedboats also offer cargo, such as transporting passengers up to Tembong. The Tutang-Maura-Highway is the name of the main road that runs from the center of Brunei. The roads of Brunei are well developed. The main port in Brunei is at Maura. From here, domestic products such as oil-based products are exported abroad. One out of every 2.09 citizens of Brunei has a car. Brunei is one of the most heavily automated citizens in the world. This is one of the reasons for the lack of vehicular traffic. Low import tariffs, non-financial handling, and cheap fuel fuel promote the use of cars. The price of petrol here is 0.53 brunei dollars.
question: What is the currency of Brunei?
answers.text: brunei dollars