The official game description lists night, snow, fog, thunderstorms, and sheep as road conditions or hazards. It does not publish a stage-by-stage map.
Expect changing conditions
Treat each stage as a fresh drive. Watch the road and the game’s cues instead of assuming a fixed route or hazard placement. The official page does not document exact weather probabilities or handling modifiers.
Stay focused around hazards
The driver should keep attention on the road while the navigator calls what is shown in the current stage. Sheep are specifically mentioned as a road hazard. Do not rely on a memorized hazard location unless you have checked the current stage yourself.
Official source
The official Roblox listing is the source for the game features described here. See the source link below.