�ݺ�ߣ

Topic on: traffic volume study
Presented by :-
Kalpataru Das
120101cel062

OUTLINE
1. Objectives
2. Scope
3. Definition
4. Methodology
5. Data presentation
6. Purpose
7. Conclusion

OBJECTIVE
 Counting is the most fundamental measurement in
traffic engineering: vehicles, passenger etc.
 Counting technique to produce estimates of volume,
rate flow, demand and capacity.
 The purposes of carrying out traffic volume count are
designing, improving traffic system, planning,
management etc.
 Traffic volume study is used in plan.

scope of traffic volume study
Magnitudes,
classification and
the time and
directional split of
vehicular flow
Proportions of scope
vehicles
Flow function of
different
approaches at a
junction
Hourly, daily,
yearly and
seasonal variation
of vehicular flow

DEFINATION
 Traffic volume study is producer to determine
mainly the volume of traffic moving on roads on a
particular section during a particular time.
 AADT: Average annual daily traffic obtain by adding
daily traffic count in one year divided by 365.
 ADT: Average daily traffic is the volume of traffic
total counted on the roadway(two way) over a given
time period(greater than one day but less than one
year) divided by the number of days in that time
period.

methodology
Traffic
volume study
Automatic
Counting
Method
Manual
Counting
Method
Contact
system based
Contact less
system based
Direct method
Indirect method

Automatic counting method
 In this method, vehicles are counted automatically
without any human involvement.
 There are two techniques of automatic counting
 Contact system based:-
 It is based on pneumatic, mechanical, magnetic or
piezo-electric method.
 Contactless system based:-
 It is based on electrical/optical, ultrasound/infrared
radar, micro wave, CCTV/video image processing
method.

equipments used for automatic counting methods
Bending
plate

equipments used for automatic counting
methods
 Vehicles numbers
are recorder
using ultrasound,
light beam or
other infrared
technology.

ELECTRONIC COUNTING BOARDS
 Electronic counting
board are battery-operated
, lighter,
more compact, and
easier to handle.
They have an
internal clock that
automatically
separates the data
by time interval.

mechanical counting board
 Mechanical counts
board consist of
counter mounted on a
board that record each
direction of travel.
Common counts
includes pedestrian,
bicycle, vehicle
classification and traffic
volume count.

manual counting method
 There are two types of manual counting
 Direct method
 Indirect method
 Direct method: Data is counted by using
hand tally manual counter.
 Indirect method: In this method, data is
collected using video camera. Video is captured
for long time and data is collected later by
rewinding.

Instruments used in direct method
Hand counter Instrument to measure distance

Instrument used in indirect method
 Video cameras are
mounted to record
the traffic condition
on road.

Data presentation
The collect from traffic volume counts
may be presented in the several ways
depending on the type of count
conducted and primary use of the data.

continue…
 Trend chart showing volume trends over
period of years are prepared. These data
useful for planning future expansion,
design and regulation.
 Variation chart showing hourly,daily and
seasonal variations are also prepared.
these help in deciding the facilities and
regulation needed during peak traffic
periods.
 Traffic flow maps along the routes are
drawn.These helps to find the traffic
volume distribution at glance.

continue…
 Volume flow diagram
at intersection either
drawn to a certain
scale or indicating
traffic volume as
shown in this figure
and it showing the
details of crossing
and turning traffic,
these data is needed
for intersection
design.

purposes
 Estimating of highway usage
 Measurement of current demand of
facility
 Economic feasibility evaluation
 Computation of accident rates
 Improvement purpose
 Planning purpose
 Traffic management purpose

conclusion
 Light vehicles(car,jeep,etc) occupied
64% of total vehicle
 Percentage of auto rickshaw is relatively
high
 Percentage of public transport is very
low

�ݺ�ߣ

Traffic volume study

More Related Content

Traffic volume study