On roads where there's no speed limit sign, you must not drive faster than the default speed limit: 50km/h in 'built-up areas' – areas with street lights and buildings next to the road less than 100m apart. 100 km/h for all other roads.
Thus, the Northern Territory section of the Stuart Highway had no speed limits at all. The Northern Territory traffic laws were updated from 1 January 2007 to be similar to the rest of Australia.
The Autobahn: Germany's Highway with No Speed Limit. The autobahn, Germany.
The Isle of Man is the only jurisdiction without a general speed limit on rural two-lane roads.
The lowest maximum speed limit in the country is 30 miles per hour (48 km/h) in American Samoa.
As of 2018 the highest posted speed limit in the world is 160 km/h (99 mph), applied on two motorways in the UAE.
Only one state, Montana, is left unspoiled with no daytime speed limit. At night, speeds are restricted to 65 mph on interstate highways and 55 mph on two-lanes.
On a road with one lane in each direction, going 10-mph is legal, but can impede the flow of traffic. If it's safe to do so, drive closer to the max speed limit. If you're driving so slow that a line of more than five cars has queued behind you, it's best to pull over to the shoulder and allow the drivers to pass you.
On roads where there's no speed limit sign, you must not drive faster than the default speed limit: 50km/h in 'built-up areas' – areas with street lights and buildings next to the road less than 100m apart. 100 km/h for all other roads.
“You must not exceed 40km/h when passing the vehicle and not increase your speed until a safe distance from the scene,” the law states.
This means that the police are lawfully allowed to speed, drive through red lights and do other acts which would ordinarily be a traffic offence. They can also use mobile phones while driving and not wear a seat-belt. Importantly, however, they can only drive like this if they are performing their duties.
According to the NSW Road Rules you cannot drive so abnormally slowly that you cause an obstruction. An example of driving 'abnormally slowly' would be if you were travelling at a speed of 20 kilometres per hour on a road with a speed limit of 80 kilometres per hour.
When there is no stated speed restriction on the interstate, 55 mph is the safest driving speed on a rural highway. However, a safe speed on residential roads is between 10 and 25 mph.
You might be driving slowly to ensure that you pass your test, but this is misguided, since where you drive hesitantly your examiner will see a lack of skill. Believe it or not, slow driving is likely to be marked as a fail-worthy driving fault, in the same category as stalling the engine or mounting the pavement.
If everyone drove the speed limit, governments would lose a major revenue stream. If governments couldn't save enough from police and EMS layoffs, governments might need to raise taxes to compensate. Slower speeds mean safer roads.
The 10% rule
On paper, as soon as you go over the speed limit, you're committing a driving offence. In reality, however, there can be some leeway. That's because the National Police Chiefs' Council (NPCC) urges police officers to use their discretion when dealing with drivers who break the speed limit.
In Australia, we have various speed limits depending on the type of road and level of pedestrian activity. The maximum legal speed a car can travel at is 130km/hour, which exists in a section of a highway in the Northern Territory.
Section 49 of the Road Traffic Act, 1933 , shall not apply to the driving of any fire brigade vehicle or any ambulance.
There are four types of speed and they are: Uniform speed. Variable speed. Average speed.
For those of you stressing out about your speeding ticket, it could be worse. The fastest known speeding ticket was issued in May 2003 in Texas. The driver was operating a Koenigseggs CCR, a super sports car made in Sweden, and was allegedly going 242 mph (389 km/hr) in a 75 mph zone.
Germany has to take the top spot in the world's fastest roads, not least because around 45 percent of the country's autobahns have no speed limit, although the advisory speed limit is 81 mph. The total length of the autobahn network is 7,982 miles, which gives you plenty of space to test the limits of your car.
Driving too slowly
Not only is it annoying, but it can also be unsafe to drive too much below the speed limit—especially on the highway—because someone might have to merge in behind you and if they're moving at a much faster speed it could cause a collision. Keep your car safe–learn what those dashboard lights mean.