DKTKey points on regulatory signs for the South Australia learner test. Each answer is checked against the official South Australia handbook or road rules; use the practice-question links to test yourself.
When does the speed limit shown on this sign stop applying?
Answer: At the next sign showing a different limit, or an end speed limit sign
A speed limit sign applies until a sign with a different limit, an end speed limit sign, or the end of the road.
Practice question 262 · official source
How far does the speed limit shown on this sign apply?
Answer: Until a sign with a different number, an end sign, or the road ends
A speed limit sign applies from the sign until another speed sign, an end speed limit sign, or the end of the road.
Practice question 263 · official source
You are driving at 50 km/h and reach this sign. What should you do?
Answer: Slow down so you are at or below 40 km/h as you pass it
The new limit applies from the sign onwards, so you must already be at or below it as you pass the sign.
Practice question 264 · official source
This sign applies on a wet, slippery road. How fast may you safely drive?
Answer: Slower than 50 km/h, because 50 is only the limit for good conditions
A speed limit is the maximum speed in good conditions. In rain, fog or on slippery roads you must slow down to suit the conditions.
Practice question 265 · official source
You are on an 80 km/h road and reach this sign. What is the limit after the sign?
Answer: 60 km/h, from the sign onward
A speed limit sign replaces the earlier limit from the sign onward, up to the next different sign or an end sign.
Practice question 266 · official source
Is it acceptable to drive 5 km/h over the limit on a road with this sign?
Answer: No, any speed over the limit is speeding
There is no safe or allowed margin over the limit. Even a small increase in speed raises the risk of a crash and its severity.
Practice question 267 · official source
What does this sign mean?
Answer: The most you may drive is 80 km/h in good conditions
A regulatory speed sign shows the maximum legal speed. It is not a minimum and it is not advisory.
Practice question 268 · official source
What happens to this speed limit when you pass a sign showing a different number?
Answer: The new number replaces it from that sign onward
The limit on the most recent speed limit sign applies until another speed sign, an end speed limit sign, or the end of the road.
Practice question 269 · official source
Can you go over this limit for a short time to overtake another vehicle?
Answer: No, the limit still applies even when you are overtaking
The speed limit applies at all times, including when overtaking. If you cannot overtake within the limit, do not overtake.
Practice question 270 · official source
You see this sign on a busy freeway in heavy rain. What is the best way to read it?
Answer: It is the most you may drive; heavy rain means slower is safer
The number is a maximum for good conditions. In heavy rain you need more time to stop, so you should drive slower.