What is the primary danger when riding a motorcycle through strong crosswind gusts on high mountain viaducts?

1. Sudden lateral wind gusts can push the motorcycle 1 to 2 metres sideways across the lane or into opposing traffic
2. A heavier machine is unaffected by crosswind and needs no adjustment
3. The danger passes once the rider has entered the gusting section
4. Wind only affects the rider's comfort, never the machine's line