Roads without speed limit? Do they exist? The answer is yes; there are some roads in the world without a mandatory speed limit!
Germany is the only country where some motorways do not have a maximum speed limit. The 130 km/h (81 mph) is sign-posted as a general advisory speed limit for motorways in the entry of the country. Due to the Autobahn (the federal controlled-access highway system in Germany), Germany is considered a country without a general speed limit on its highways. However, limits are posted (and enforced) in areas that are urbanized, substandard, accident-prone, or under construction.
Isle of Man, a self-governing British Crown dependency, situated in the Irish Sea between Ireland and Great Britain is also known for its speed limit policy. There is no national speed limit in this island – some roads may be driven at any speed which is safe and appropriate. Careless and dangerous driving laws still apply, so one may not drive at absolutely any speed, and there are local speed limits on many roads.