Transport in Saudi Arabia  With the arrival of petrodollars, the Kingdom of Saudi Arabia has initiated many mega infrastructure development projects in the country, and the extensive development of the transportation network has followed suit in support of various economic developments. As a result, the country now boasts an extensive transportation network. Total:  Paved: (includes of expressways) Unpaved: (as of 2006)  Roads in Saudi Arabia vary from eight-laned roads to small two-lane roads in rural areas. The city highways and other major highways are well maintained, especially the roads in the capital Riyadh. The roads have been constructed to resist the consistently high temperatures and do not reflect the strong sunshine. The other city highways such as the one linking coast to coast are not as great as the inner-city highways but the government is now working on rebuilding those roads. In October 2013, a group of auto enthusiasts drove some through Saudi Arabia in search of the best driving road, and named the Jeddah-Taif-Al-Hada highway as "motoring nirvana". Saudi Arabia had encouraged road transport in the past as had it maintained one of the lowest petrol prices in the world, at $0.13 per litre. In 2018, this price was raised to about $0.54 per litre, which is still not that high global-wise but definitely the highest it had ever been in the oil producing kingdom. It is worth noting that due to limited alternative passenger transport options in the country, the gasoline fuel demand is relatively inelastic to its prices; light-duty vehicles dominate the passenger transport landscape. Buses and other public transport options are limited, and walking or bicycles are hindered by the sprawling city landscapes and harsh weather in most regions of the country. Some of the important inter-city highways include the following:  On 19 February 2018, it was announced that four of the main Saudi motorways that allow for high speed will grant a speed limit increase to users from 120 kmph to 140 kmph. Those motorways are (Mecca-Medina), (Riyadh-Dammam), (Riyadh-Gassim) and finally (Riyadh-Taif). Saudi Arabia has a well development sea transport network developed primarily to support the transport of petrochemicals. Saudi Ports Authority is the ports management organization in the country, overseeing the operations. The largest seaport in Saudi Arabia located on the Red Sea. This port makes 80% of maritime flow.