Roadworks, a solid line and a late pillion
At 5:40 pm on the Baghdad–Hilla highway, a rider on a 150 cc motorcycle is travelling at 60 km/h with a pillion passenger. Ahead is a roadworks zone: a warning sign reading 'Road works 300 m', a temporary circular 40 km/h sign, and a flagger holding a red flag. The permanent centre line is a double solid line, but a temporary yellow edge line narrows the lane to about 2.8 m. Dust from a stopped truck reduces visibility, and the low sun is directly ahead. The rider is 2 seconds behind the truck, which is straddling the centre of the lane. The opposite direction has a queue of cars, and the flagger has not yet signalled the rider through. The rider wants to overtake before the queue moves, because the pillion is late for work.
1. What do the warning sign, the temporary speed sign and the double solid line require the rider to do before the works zone?
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The warning sign means road works begin in 300 m, so the rider must start slowing immediately, not at the first cone. The temporary 40 km/h sign sets the legal maximum through the controlled section; the rider should be at or below 40 km/h before reaching it. The double solid centre line prohibits crossing or overtaking, and a works zone does not cancel that unless a flagger or temporary sign explicitly directs traffic into the opposite lane. The 2.8 m narrowed lane means there is not enough width to share beside the truck safely. The rider should move to a position near the centre of the remaining lane, out of the worst dust, increase the gap to 3–4 seconds, and cover the brakes. Because a pillion is aboard, stopping distance and balance are worse, so the rider should be slower than the posted limit and ready to stop at the flagger.
2. Can the rider legally and safely overtake the truck before reaching the flagger? Explain using the markings, sight distance and the pillion.
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No. Legally, the double solid line forbids crossing, and the rider has no temporary sign or flagger instruction that opens the opposite lane. Practically, the truck blocks the view of oncoming traffic, the low sun can hide an approaching car, and dust reduces the rider's chance of seeing a safe gap. The opposite queue means an overtake could end in a head-on conflict if the gap closes. With a pillion, acceleration, braking and balance are all worse, and a fall would injure two people. Being late for work is not a legal or safety justification. The rider should hold the gap, stop at the flagger and overtake only after the works end and the centre line permits it with clear sight distance.
3. The flagger waves the rider forward, but an oncoming car is approaching 80 m away at about 50 km/h. What should the rider do?
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The flagger's wave authorises the rider to proceed through the controlled section, but it does not prove the opposite lane is clear. At 80 m, a car at 50 km/h closes at about 14 m/s, so the gap could disappear in roughly 6 seconds before the rider's own speed is added. The temporary lane is only 2.8 m wide and the truck is still nearby. The rider should stop, keep the front brake covered, make eye contact with the flagger and wait until the car has passed or the flagger clearly stops it. If the flagger insists, the rider should proceed at walking pace, stay as far right as the surface allows and be ready to stop. The rider must not overtake the truck inside the coned area.