Why are the first 10 to 15 minutes of rainfall the most treacherous and hazardous period for motorcycle road traction?

1. Rainwater mixes with dried motor oil, rubber particles, and road dust accumulated in asphalt pores, creating a soapy, extremely slick film before heavy rain can wash it away
2. Motorcycle brake pads absorb water and become five times thicker, locking the wheels automatically
3. Raindrops create miniature explosions upon striking hot motorcycle tires
4. Asphalt dissolves in rainwater during the first ten minutes