Write paraphrase of this:

Task1:
Highway alignment is the center line of the highway or the road onthe ground. The road alignment is very important because when theynot prepare it carefully it will cause high building cost, highmaintenance cost and also, an increase in accident. There arerequirement of high alignment like safe, easy, short andeconomical. And there are also factors that should be consideredwhen choosing road alignment. These factors differ and depend onthe type of road and the areas through which these roads pass. Inthis part we will concentrate on or obligatory points which isdefined the highway alignment. It is separated into two parts,negative and positve obligatory points.
positve obligatory points:
these are those points through which the alignment shouldpass.
Existing road: the alignment should be fixed such the newlyconstruction road should link to the existing road.
Intermediate town: if it is possible to have a straight roadbetween point A&B and the intermediate town located at c, thenthe street need to link the intermediate town reducing the changein highway alignment.

Bridge site/Existing Bridge:
This is not adivicable to cross the river in a curve position, wehave to change the alignment in such a way that it crosses theriver in straight line, it should locate in right angle(90o) to theriver flow and not locate in curve position. There are some reasonsfor this, the curve position they keep changing, when you make theright angle the length of the barge it will be short. So, the costof this construction it will be less.   

Negative obligatory points:
When I went to the site and I saw lake or water body , I have tochange this aligment to avoided the lake area. From the stragthline to curve line because of the water body. So, this water bodyis a Negative obligatory