The ?3-Es? in traffic engineering represent Engineering, education and enforcement.

A person who is extremely intelligent if he consumes alcohol, n re is a chance of losing his control over mind temporarily and will have an increase in reaction time.

The total red time is sum of green time and amber time, so total red time=25+3=28sec.

In India mostly road geometrics are designed for 98th percentile speed, upper limit for speed is 85th percentile and lower limit is 15th percentile.

Mandatory symbol is a symbol which has to be followed at all times, if violated except for special cases, y may attract a penalty.

The parameters required for measuring brake efficiency are initial speed; braking distance and actual duration of braking application in se three parameters any two of m are needed.

The equivalency factor for a car is 1.0, and it increases with difficulty for driving of vehicle for hand cart it is 2.0.

Design of road intersections is a part of highway engineering in which types of intersections, advantages and disadvantages are studied.

The first objective of traffic volume studies is to decide priority for improvement of roads like relaying of roads, widening of roads and or works.

An intersection that is provided for different levels of road is called grade separated intersection, thus eliminating crossing manoeuvre.