Why should drivers of doubles and triples be especially cautious in crosswinds?

DOUBLES/TRIPLES IN CROSSWINDS: Multiple trailers present a large flat side surface that catches wind. EFFECTS: Strong crosswinds push against the side of the trailers; the rear, lighter, or empty trailers are most affected (less weight to resist the wind); the combination can be pushed sideways in the lane or, in extreme cases, tipped over; the 'crack-the-whip' effect can be triggered by wind gusts; HIGH-RISK SITUATIONS: Open/exposed areas, bridges, overpasses, gaps between buildings or terrain, passing or being passed by large vehicles (wind blast); EMPTY trailers are especially vulnerable (light, full side area); DRIVER RESPONSE: Slow down in strong crosswinds; keep a firm but smooth grip on the wheel; anticipate gusts in exposed areas; be ready for the wind to push the trailers; if winds are severe, consider stopping; LENGTH: The longer combination has more total side area than a single trailer; ROLLOVER: A strong gust hitting a light or empty rear trailer can tip it; crosswind awareness is part of safe doubles/triples operation — the added side area and the vulnerability of multiple (especially empty) trailers make wind a greater hazard than for single trailers.