Traffic jams are generally not a nightmare in Sweden as they may be in some other cities in the world. It may well be due to Sweden's well utilized and reliable public transport infrastructure, that there is less road traffic. The use and presentation of road signs has also been maintained and been reputed to be reliable.
The road rules use right hand traffic but it took a while before it was implemented as the law, despite the neighboring countries using right hand traffic before 1967. This event of beginning left hand traffic on the 3 September (Sunday) from 5am in 1967 is known in Sweden as Dagen H. From about 1736 Sweden began left hand traffic. It was in the year of 1955 that a referendum was rejected by the citizens of Sweden in a vote on changing the left hand traffic (despite road accidents caused by tourists or visitors making errors by forgetting the road rules) while on Swedish territory.
The total roadways is over 572 900km. One of the longest roads or motorways is 585km, called the Värnamo-Gävle. The network or motorways is currently being extended and maintained.
Also making use of the roads are taxi (also known as cab in North America) drivers. There are a number of large and small taxi services in Sweden. Although airport taxis have fixed prices as well as some other taxi companies, the fares/prices are not regulated. Prices may therefore be higher at certain times of the day or on weekends. For this reason, to avoid a miss-understanding it is worth asking the fare when you book, call for or find a taxi. Anyone with a taxi driver license is registered and has undergone relevant medical tests to show he or she is a component public transport driver on the roads.
Hiring vehicles is possible in Sweden. As with all general vehicle hiring companies, it is mandatory to pay for motor insurance when hiring a vehicle. There are a number of vehicle manufacturers in Sweden as well. The highly respected Volvo range of vehicles was started in Sweden by AB Volvo and in 1999 it was bought by the Ford Management Company.
There are some self-driving tours in Sweden. A website called Sweden.nordicvisitor.com has a list of optional self-driving tour packages. The can extend over several nights, some for longer with laid out stops for a required night's sleep and rest. By driving yourself and following a route, is a great way to explore Sweden. The fact that the roads are in good condition with adequate road signage, is all supportive for road users.