Speed Analysis of traffic Data

Presented by :Anshal Vyas -F31040Atindra Vyas-F31041Arjun Rajan Kaul-F31020Neeraj - F31013

Title of study

Speed Analysis of traffic Data using Spot speed Study

Objective

• To Determine the Upper & Lower Values or speed limit regulation of mixed traffic flow

• To Determine the Design speed for checking the geometric Design Elements of the highway

Scope

Study Area

• Our Study Area was the road outside NICMAR Gate no: 1

• This road has quite a number of small shops on one side and is located close to MITCON university as well.

• We feel this road was best suited to conduct our analysis as this is used quite frequently and would provide us with a lot of readings that will help improve our accuracy of our outcome

GEOMETRICAL DIMENSIONS OF THE ROAD

Length – 50m

Width – 19m

Carriage way- 3.75m

No shoulders provided.

PROCEDURE

• Two reference points were taken and measuring tape was used to measure the distance between the points.

• Chalk was used to mark the two points. The two observers were stationed at these points.

• An observer stood at the reference point where the enoscope was fixed. Every time the image of a passing vehicle is seen through the enoscope, the stop watch is started.

•The second observer would then stop the stop-watch whenever he observed the same vehicle pass the second reference point.

•The distance apart and the time taken for each vehicle to cover the distance were used to calculate the speed of each vehicle

Statistical Method(EQUIPMENT USED)

Enoscope:• This device, also known as the Mirror-box, is an L-shaped box,

open at both ends, with a mirror set at a 45-degree angle to the arms of the instrument.

• The instrument bends the line of sight of the observer so that it is perpendicular to the path of the vehicle.

• The stop-watch is started as soon as the vehicle passes the first reference point and is stopped as soon as it passes the observer.

• The method can be used with one enoscope or with two enoscopes.

Data Collected(Recorded time of travel in secs)

3.4 3.29 3.76 3.51 3.59 2.69 1.76 4.59 2.5

4.45 5.85 3.39 2.94 3.63 3.65 2.8 2.2 4.36

4.42 1.9 3.37 3.11 3.18 4.66 3.1 3.18 4.66

3.1 2.23 2.6 3.51 4.16 2.66 4.43 3.92 3.23

2.1 3.05 2.68 3.32 3.69 3 3.06 2.98 3.64

4.1 2.8 2.86 3.18 2.49 2.8 2.86 3.18 2.49

2.8 2.4 3.4 4.1 2.6 2.97 3.3 3.5 3.29

3.78 4.04 4.8 2.93 7.31 3.8 3.68 3.13 3

7.79 4.4 2.8 1.65

Methodology

• This is an account of how the speed study was carried out.

• Location: Stretch of road in front of NICMAR gate no.1.

• Number of individuals involved : Two(5)• Period of study: between 11:30 a.m. and 12:30 p.m.

on a weekday .• Instruments used: Stop-watch, measuring tape,

marker chalk, data sheet/book.

Analysis

Time Taken By Vehicle(seconds)

Con3.39version factor(multiply with 18/5)

Speed of the vehicle(km/hr)

3.4 3.6 31.6

3.29 3.6 32.8

3.76 3.6 28.72

3.51 3.6 30.76

3.59 3.6 30.08

2.69 3.6 40.14

1.76 3.6 61.36

4.59 3.6 23.52

2.50 3.6 43.20

4.45 3.6 24.26

5.85 3.6 18.58

3.39 3.6 31.85

2.94 3.6 36.73

3.63 3.6 21.75

3.56 3.6 30.33

2.80 3.6 36.57

2.20 3.6 29.75

4.36 3.6 24.77

4.42 3.6 24.43

1.90 3.6 56.84

3.37 3.6 32.04

3.11 3.6 34.72

3.18 3.6 33.96

4.66 3.6 23.17

3.10 3.6 32.83

2.23 3.6 48.43

2.60 3.6 41.5

3.51 3.6 30.76

4.16 3.6 26.9

2.66 3.6 40.6

4.43 3.6 24.37

3.92 3.6 27.55

3.23 3.6 33.92

2.10 3.6 51.4

3.05 3.6 35.4

2.68 3.6 40.29

3.36 3.6 32.53

3.69 3.6 29.5

3.00 3.6 36.0

3.06 3.6 36.0

2.98 3.6 36.24

3.64 3.6 29.6

4.10 3.6 26.34

2.80 3.6 38.50

2.86 3.6 37.97

3.18 3.6 33.96

2.49 3.6 43.37

2.80 3.6 38.57

2.40 3.6 45.00

3.40 3.6 31.76

4.10 3.6 26.34

2.60 3.6 41.53

2.97 3.6 36.30

3.30 3.6 32.7

3.50 3.6 30.85

3.29 3.6 32.82

3.78 3.6 28.57

4.04 3.6 26.73

4.80 3.6 22.50

2.93 3.6 36.86

7.31 3.6 14.77

3.80 3.6 28.42

3.68 3.6 29.34

3.13 3.6 34.50

3.00 3.6 36.00

7.79 3.6 13.86

4.40 3.6 24.54

2.80 3.6 38.57

1.65 3.6 66.25

Result(Frequency distribution of spot

speed data)

Speed Range(kmph)

Mid Speed(kmph)

Frequency , F Frequency percentage

Cumulative Frequency

0-10 5 0 0 0

10-20 15 03 4.43 4.43

20-30 25 20 28.98 33.41

30-40 35 32 46.37 79.78

40-50 45 10 14.49 94.27

50-60 55 02 2.89 97.16

60-70 65 02 2.89 100

Frequency Distribution curve of the spot Speeds

Cumulative Speed Distribution

References

• Highway Engineering –S.K Khanna

• Class Notes