Traffic Engineering

 Do You Know?

👉Various methods of carrying out Speed and Delay study

   (a) FLOATING CAR or RIDING CHECK METHOD

   (b) LICENSE PLATE or VEHICLE NUMBER METHOD

   (c) INTERVIEW TECHNIQUE

   (d) ELEVATED OBSERVATIONS

   (e) PHOTOGRAPHIC TECHNIQUE

👉Origin and Destination Studies (O & D Data)

Origin and destination studies of vehicles determines their numbers, origin and destination in the concerned zone of study.

👉 Methods of collection of O & D Data)

(a) ROAD SISE INTERVIEW METHOD

(b) LICENSE PLATE METHOD

(c) RETURN POST CARD METHOD

(d) TAG ON CAR METHOD

(e) HOME INTERVIEW METHOD

(f) WORK SPOT INTERVIEW METHOD

👉Representation of O & D Data

(a) O & D Table

(b) Desire Lines

(c) Pie Chart

(d) Contour Lines

Note: Desire lines are straight lines connecting the origin points with destinations.

👉 Accident Studies

Accident studies are used to find out the reason and cause behind accident and to take preventive measures in term of design control.

The various records that are maintained in accident studies are:

(a) Location Files

(b) Spot Maps

(c) Condition Diagram

(d) Collision Diagram