The crosswind direction is opposite to the downwind direction: the downwind vibrates.

The wind direction is consistent with the structural vibration direction.

The wind direction is perpendicular to the direction of structural vibration.

Generally speaking, this sign will appear in some tuyeres or wide areas to remind drivers that there will be a strong crosswind ahead. This is to improve attention, hold the steering wheel with both hands a little hard, and avoid the sudden attack of crosswind that causes the vehicle to deviate from the driving direction.

The signs are as follows:

This sign will appear in some tuyeres or wide areas to remind drivers that there will be a strong crosswind ahead. Be sure to hold the steering wheel slightly with both hands to avoid sudden crosswind attack, which will cause the vehicle to deviate from the driving direction.