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时速 — pronunciations, definitions, and tags
HanziPinyinEnglishTags
时速shísùspeed per hourHSK 6, unknown, 17 strokes, rank #7304, Hard
shísù(shi2su4)shi su T2
  1. 1speed per hour
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March 24, 2026

时速(時速)shísù(shi2su4)

时速 refers to the measure of speed expressed as the distance traveled in one hour. Commonly used in contexts like transportation, it indicates how fast a vehicle or object is moving, such as kilometers per hour (km/h). This term combines the character '时' (time) with '速' (speed), highlighting the relationship between time and speed.

Strokes17Frequency#7304DifficultyHard
Cultural note

In China, traffic regulations are strictly enforced, and knowing the typical 时速 for different types of vehicles is crucial for safety. Speed limits are commonly posted on highways, emphasizing the importance of understanding this term in daily life and travel.

Memory tip

Imagine a clock (时) running at a fast pace (速) as a car zooms by. The clock ticks away the hours while the speedometer shows how fast the car is going each hour. Visualize a race where you time how fast the racers go in terms of hours — that's 时速!

Meanings of 时速

shísù(shi2su4)
1speed per hour
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About 时速

时速Simplified
時速Traditional
17Strokes
—Radical
名词míngcínoun (n.)Part of Speech
#—Frequency Rank
HSK 3.0L6AdvancedCEFRC2

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Podcast: 时速

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AI study notes for 时速

Quick Contrast

速度 (sùdù) refers to speed in a general sense, while 时速 (shísù) specifically denotes speed measured over time, typically in terms of distance per hour.

Usage Notes

时速 is typically used in formal contexts such as traffic regulations or scientific discussions. A common mistake is confusing it with 速度 (sùdù), which simply means 'speed' without the time aspect. When discussing speeds, always clarify whether you're talking about per hour, as in 时速, or just general speed.

HSK Study Tips

While 时速 itself may not appear in HSK vocabulary lists, it connects to the HSK level 3 word '快' (kuài, fast) and level 4 word '走' (zǒu, to walk/go). Students should focus on understanding how speed is quantified in Chinese, linking it to other terms related to movement and time.

Common Mistakes

Learners often mistakenly use 时速 to refer to speed in general without the time component. For example, saying '我的时速是80公里' (My speed is 80 kilometers) is incorrect; it should be '我的速度是80公里' for general speed.

AI-enhanced 2026-03-24

Pronunciation of 时速

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Component characters

时shío'clock
HSK 27 strokes日
View full entry
速sùfast
10 strokes辶
View full entry

How to say speed per hour in Chinese

“speed per hour” in Chinese is时速shísù

时速 refers to the measure of speed expressed as the distance traveled in one hour. Commonly used in contexts like transportation, it indicates how fast a vehicle or object is moving, such as kilometers per hour (km/h). This term combines the character '时' (time) with '速' (speed), highlighting the relationship between time and speed.

When to use 时速

时速 is typically used in formal contexts such as traffic regulations or scientific discussions. A common mistake is confusing it with 速度 (sùdù), which simply means 'speed' without the time aspect. When discussing speeds, always clarify whether you're talking about per hour, as in 时速, or just general speed.

时速 or something close to it

速度 (sùdù) refers to speed in a general sense, while 时速 (shísù) specifically denotes speed measured over time, typically in terms of distance per hour.

What learners get wrong

Learners often mistakenly use 时速 to refer to speed in general without the time component. For example, saying '我的时速是80公里' (My speed is 80 kilometers) is incorrect; it should be '我的速度是80公里' for general speed.

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时
速

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Frequently asked questions about 时速

The term for 'speed limit' is 速度限制 (sùdù xiànzhì).

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