Is a driver always permitted to travel at the maximum posted speed limit regardless of weather, road, and traffic conditions?

1. No, speed must always be adjusted to road layout, weather, surface condition, traffic density, and personal visibility
2. Yes, the posted speed limit is a mandatory target speed that must be maintained at all times
3. Yes, provided the vehicle has functional anti-lock brakes (ABS)
4. Yes, during daylight hours regardless of rain or mud