What are the speed limits for 30, 40, 50, and 70 in Subject One?

[McHailey]

Here is the introduction to the speed limits for 30, 40, 50, and 70 in Subject One: Urban roads without centerlines: The maximum speed limit for urban roads without road centerlines is 30 km/h. Urban roads with centerlines: The maximum speed limit for urban roads with road centerlines is 50 km/h. Highways with centerlines: The maximum speed limit for highways with road centerlines is 70 km/h. Highways without centerlines: The maximum speed limit for highways without road centerlines is 40 km/h. Below is extended information on speed limits for two-lane and three-lane highways: Two-lane highways: The so-called two-lane highway speed refers to highways with two lanes in the same direction. The speed range for the right lane is 60 km/h to 100 km/h, and the speed range for the left lane is 100 km/h to 120 km/h. Three-lane highways: The three-lane highway speed refers to highways with three lanes in the same direction. The speed range for the far-right lane is 60 km/h to 90 km/h, the middle lane is 90 km/h to 110 km/h, and the far-left lane is 110 km/h to 120 km/h. The left lane is the overtaking lane, hence the higher speed limit.

[Pat]

When teaching students to drive, I often emphasize the '30-40-50-70 speed mnemonic' for subject one, which refers to speed limits on different types of roads. 30 represents urban roads without a center line, with a maximum speed of 30 kilometers per hour, suitable for residential areas or small lanes; 40 is for roads without a center line, such as rural roads, with a speed limit of 40; 50 is for urban roads with a center line, where the speed can reach 50 kilometers per hour; and 70 is for roads with a center line, such as national highways or suburban roads, with a speed limit of 70. These numbers serve as a shorthand in exams, helping learners quickly memorize key regulatory points. Mastering it is not just for passing the test but also enhances daily driving safety and reduces accidents. Especially at night or in adverse weather conditions, these lower speed settings provide protection. Beginners often overlook these small details and tend to make mistakes in mock tests. After memorizing the mnemonic, practical application becomes much smoother.

[DiJoel]

I just passed the written driving test recently, and the instructor kept repeating this mnemonic: 30405070. 30 km/h applies to narrow urban roads without marked lanes, 40 km/h is for rural roads without center lines, 50 km/h is used on marked urban roads, and 70 km/h is for main highways with signs. I used to find memorizing it troublesome, but after actually driving, I realized how practical it is—it helps you anticipate road conditions. For example, when it rains, exceeding 30 km/h increases the risk of skidding. During the theory exam, rote memorization wasn't enough; practicing with real-life scenarios in the question bank was key to retention. Never underestimate these small tips—they make driving smoother and safer.

[DeJace]

Having driven for most of my life, the '30405070' rule is fundamental knowledge. 30 is the speed limit in densely populated residential areas without signs, 40 is for unmarked remote roads, 50 applies to urban main roads with center lines, and 70 is suitable for highway auxiliary roads. Setting speeds reasonably balances efficiency and risk, especially for beginners—following this rule helps avoid speeding tickets. Looking back to when I took my driving test decades ago, this rule saved me during several mock exams. In actual driving, you must adjust based on road signs rather than relying solely on memorization. Staying alert is more important than anything.

[Louise]

Safety first is the principle, and 30, 40, 50, 70 in Subject 1 are crucial for life safety. A 30 km/h speed limit protects vulnerable groups in pedestrian-dense areas, 40 provides a buffer for collisions in rural roads with blind spots and narrow visibility, 50 ensures stable urban traffic flow, while 70 balances speed and distance on highway sections. This question often appears in exams because neglecting it can lead to tragedies. It is recommended that learners use APP simulations to reinforce memory and develop habits to improve reaction speed. Don’t just treat it as a knowledge point—integrate it into daily driving, such as checking speed limit signs before starting.

[MacAaliyah]

When teaching kids about driving tests, always remind them of the meaning behind the 30-40-50-70 speed mnemonic: 30 is for residential streets without a centerline—drive slower for safety; 40 is for unmarked roads in rural areas—40 is just right for protection; 50 is for urban roads with lane markings—boosting efficiency without losing stability; 70 is for highway on-ramps—maintain distance to prevent rear-end collisions. Remembering this not only makes passing the written test easier but also ensures safe trips for the family. Combine it with real-life driving discussions, like why certain speeds are set for different road sections, to make learning more vivid and profound—don’t let theory feel rigid.