Overtaking a Sugarcane Trolley Before a Blind Crest
You are driving a car on a single carriageway national highway near Gujrat at 16:30. The sign at the edge of the last village showed a maximum speed of 80 km/h. Ahead, a tractor-trolley loaded with sugarcane is crawling at about 20 km/h, straddling the left edge and throwing cane leaves onto the road. Behind it, a bus is following at 40 km/h, and behind you a pickup is close. The road has one lane in each direction, a solid white centre line for the next 200 metres, and a blind crest 80 metres ahead. An oncoming car is visible about 250 metres away beyond the crest. You have a clear view for about 120 metres before the crest. The tractor's rear reflectors are dusty, and its left indicator is flickering intermittently.
1. Should you begin an overtake now? Use the markings, sight distance and closing speeds to explain.
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No. The solid white centre line prohibits crossing for the next 200 m, and the blind crest 80 m ahead means you cannot see approaching traffic beyond it. Your clear view is only about 120 m, while an overtake from 20 km/h to 80 km/h needs several hundred metres to complete and return. The oncoming car 250 m away is closing at perhaps 80 km/h; even if it is beyond the crest now, it will be near you by the time you are alongside the tractor. The pickup behind may encourage you to go, but it cannot see better than you. Wait for a broken line and a clear, straight section with no oncoming traffic.
2. What following position and gap should you keep behind the tractor, and why?
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Stay roughly three to four seconds behind, not close enough to be hit by cane leaves or falling cane. Position the car slightly toward the centre of your lane so you can see past the tractor's left side, but do not cross the solid line. The dusty reflectors and flickering indicator mean the tractor's intentions are unclear; the driver may turn left into a field without warning. A larger gap gives you time to stop if the tractor brakes or a cane rolls off, and it gives the pickup behind more room to see your brake lights. Use dipped headlights if visibility drops.
3. The bus ahead pulls out to overtake the tractor. What should you do, and what should you not assume?
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Do not follow the bus out. The bus is larger and may block your view of the oncoming car and the road beyond the crest. It may also misjudge the overtake and force the oncoming car to brake. Slow down, increase your gap, and be ready to stop if the bus has to pull back in. Do not assume the bus driver has a clearer view or that the gap behind the bus is safe for you. Wait until the bus has completed the manoeuvre, the oncoming car has passed, and you can see a broken line and enough clear road to overtake on your own.