If there is a crossing made of metal sheets on your path:

• 1Never cross crossings with a metal surface, because this may end in a fall from the motorcycle. Such surfaces are always very slippery.
• 2As you approach the crossing, reduce your speed as much as possible. At the moment of crossing, do not press the brake and do not add throttle.
• 3At such crossings, you must be very careful; even in dry weather they can be slippery.
• 4Answers 2 and 3.