Slippery Surface
A road surface with reduced grip — wet asphalt, paint lines, oil, sand, leaves.
What is it
A slippery surface is any road area where tire grip is significantly reduced. Wet asphalt, road markings, oil spills, sand, cobblestones, leaves, metal manhole covers — all can steal traction instantly.
How it happens
A rider hits a slippery patch while leaned over or braking. The tire loses grip — and the bike goes down (lowside). Especially dangerous: the first minutes of rain (oil rises to the surface), sand from winter, wet paint lines.
How to reduce the risk
- Read the surface — constantly scan the road ahead
- On suspicious patches — ride upright, no lean, no braking
- Wet paint lines — avoid or cross perpendicular, never at an angle
- After rain — double following distance, half the lean angle
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Related terms
Perception Error
Misjudging speed, distance, or the intention of another road user. The number one cause of crashes.
Visibility Blocker
An object blocking your line of sight — a truck, fence, bush. Anything could be behind the blocker.
Target Fixation
Involuntarily staring at an obstacle instead of the safe path — and riding straight into it.
Blind Spot
An area around a vehicle where the driver cannot see you — not in mirrors, not in peripheral vision.
Left Turn Danger
A car turns left across your path — the most common type of motorcycle collision.
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Chain Reaction
One event triggers a series of crashes — each participant's reaction creates a new hazard.