Your vehicle's braking distance increases with the square of your speed, meaning if you double your speed, you'll need four times the distance to brake to a stop.
When driving in heavy fog or rain, using your high-beam headlights is dangerous because the light reflects off the moisture, creating glare that actually reduces your visibility.
In many jurisdictions, the legal speed limit automatically drops to just 15 mph when approaching a 'blind' intersection where your view of cross-traffic is blocked.
While the default speed limit in most residential areas is 25 mph, the speed limit in an alley is often much lower at just 15 mph due to limited visibility.
To maximize safety and control, a driver should complete all braking *before* entering a curve while still traveling in a straight line, as braking in the middle of a turn can cause a skid.