Safe Following Distance (Two-Second Rule)
Maintain at least 2 seconds of gap behind the vehicle ahead. Increase in rain, fog, or at high speed.
The two-second rule: pick a fixed point on the road and count at least 2 seconds between when the vehicle ahead passes it and when you pass it. In wet conditions, double it to 4 seconds. On highways at 100 km/h, 2 seconds = ~56 metres.
Penalty Under Law
Tailgating itself: ₹500 (Sec. 177). Causing accident by tailgating: Sec. 184 — ₹1,000–₹5,000 + imprisonment.
Legal Source
CMVR Rule 3; MV Act Sec. 184 (dangerous driving)
What the Law Says
CMVR Rule 3 mandates a "safe distance" between vehicles. While no exact metric is specified in the statute, the universally accepted standard taught in driving schools and referenced by traffic authorities is the two-second rule. Following too closely (tailgating) that results in a collision is prosecuted under Sec. 184 as dangerous driving.
💡 Why This Rule Exists
Human reaction time averages 1.5 seconds. If you follow with less than 2 seconds of gap, you cannot stop before hitting the vehicle ahead if it brakes suddenly. At 80 km/h, a vehicle covers 22 metres per second — a 1-second gap is only 22 metres, well within your stopping distance. Rear-end collisions are the most common type of highway accident in India.
Key Facts
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2-second rule: at least 2 seconds of following gap in dry conditions.
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4-second rule: in wet, fog, or night conditions.
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6-second rule: in heavy rain or very low visibility.
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At 60 km/h, 2 seconds ≈ 33 metres.
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At 100 km/h, 2 seconds ≈ 56 metres.
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Trucks need double the gap — their braking distances are much longer.
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The 2-second rule applies regardless of speed.
⚠️ Common Violations
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Tailgating at highway speeds — leaves no reaction time.
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Following buses and trucks too closely (their large size hides hazards ahead).
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Reducing gap on city roads because traffic is slow — even at 40 km/h, 1 second is dangerously close.
Frequently Asked Questions
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More Rules of the Road Rules
Always Drive on the Left Side of the Road
All vehicles in India must travel on the left side of the road. Wrong-side driving is a leading cause of head-on collision deaths.
₹500 – first offence
Lane Discipline and Lane Markings
Lane markings are legally binding instructions. A solid yellow centre line means no overtaking. A broken white line permits lane changes when safe.
₹500 under Sec
Rules for Overtaking (Passing) Vehicles
You may overtake only from the right, only when the road ahead is clear, and never in prohibited zones. The vehicle being overtaken must make way.
Illegal overtaking: ₹500 (Sec
Mandatory Use of Indicators and Hand Signals
Every driver must signal their intention to turn, change lanes, or stop — using indicators or prescribed hand signals. Failing to signal before a manoeuvre is a legal violation.
₹500 under Sec