What are methods engineers use to ensure safety on roads through curves on the road?

Question

What are methods engineers use to ensure safety on roads through curves on the road?

Answer 1

They bank the turns slightly to the inside and put up signs to indicate safe speeds.

Answer 2

A national medium or long term Road Safety Plan is a prerequisite for achieving sustainable improvements in road safety.

The plan should set measurable long term and mid-term road safety targets, build capacity of local institutions, and provide alternative sources of financing for road safety measures.

Answer 3

The most common forms of 'safety' for curves are guard rails and positive banking.

Guard rails on the outside of the curve will help prevent vehicles from going over the side and at least keep the vehicle on the pavement if the curve is taken too fast.

Positive banking is the upward tilt of the outside edge...This makes it easier to travel the curve at the posted speed limit...

Negative banking or the downward tilt of the outside of the curve is seen mostly on highways, especially transition roads...It is very minor, but one must be careful of their speed ..This also applies to a flat curve without any banking.

Matching the correct speed limit to the curve takes in all these factors plus the length of the curve, its angle, type pavement and topography.

Good question.