ITE Journal - July 2021 - 47

100% CV MPR to as low as 10%. By comparing with the " true "
capacity and jam density recorded by VISSIM, the CV trajectory
method with a 10% CV MPR highlights its accuracy. The method
demonstrates its potential to benefit the traffic management
profession by generating an accurate fundamental diagram at
relatively low CV MPRs.
The generated FDs in this paper reflect the vehicle movement
logic in VISSIM. The shape of a FD will change in response to
different vehicle movement logic. Nevertheless, the main purpose
of this paper is to demonstrate the effectiveness of constructing FDs
with CV trajectory data even at a low MPR. The proposed FD using
the field CV trajectory data will be investigated in the future. itej
Acknowledgement
The lead author would like to thank her colleagues from SUNY
University at Buffalo for their effort in collecting traffic and timing
plan data in the field.
References
1. H. Greenberg, " An analysis of traffic flow, " Operations Research, vol. 7, no. 1,
pp. 79-85, 1959.
2. B. Greenshields, J. Bibbins, W. Channing, and H. Miller, " A study of traffic
capacity, " 1935, vol. 1935.
3. R. T. Underwood, " Speed, volume, and density relationships, " 1960.
4. J. Jin and B. Ran, " Automatic Freeway Incident Detection Based on
Fundamental Diagrams of Traffic Flow, " Transportation Research Record,
vol. 2099, no. 1, pp. 65-75, Jan. 2009, doi: 10.3141/2099-08.
5. X. Wu, H. X. Liu, and N. Geroliminis, " An empirical analysis on the arterial
fundamental diagram, " Transportation Research Part B: Methodological, vol.
45, no. 1, pp. 255-266, 2011.
Figure 5. Evaluations of the CV trajectory method under different MPRs.
values in flow is more sensitive than those values in density.
Secondly, the estimates from the CV trajectory method with
100% CV MPR are likely to overestimate the capacity and jam
density at an intersection, whereas the estimates with 10% CV
MPR are probably underestimates of those values. Nevertheless,
it is remarkable to observe that with only 10% CV MPR, the CV
trajectory method can keep the performance of its estimation on
the triangular shape up to 86.4% in height and 90.1% in width.
Conclusions
This study proposed a novel method to construct a flow-density
FD using CV trajectory by interpreting driving status and shock
waves. The method is validated using VISSIM generated trajectory
by assigning different CV MPRs. The method shows its efficiency
to provide consistency in the estimations of density and flow from
6. T. Seo, Y. Kawasaki, T. Kusakabe, and Y. Asakura, " Fundamental diagram
estimation by using trajectories of probe vehicles, " Transportation
Research Part B: Methodological, vol. 122, pp. 40-56, Apr. 2019, doi:
10.1016/j.trb.2019.02.005.
7. M. Berkow, C. M. Monsere, P. Koonce, R. L. Bertini, and M. Wolfe,
" Prototype for data fusion using stationary and mobile data: Sources for
improved arterial performance measurement, " Transportation Research
Record, vol. 2099, no. 1, pp. 102-112, 2009.
8. C. F. Daganzo and N. Geroliminis, " An analytical approximation for the
macroscopic fundamental diagram of urban traffic, " Transportation
Research Part B: Methodological, vol. 42, no. 9, pp. 771-781, Nov. 2008,
doi: 10.1016/j.trb.2008.06.008.
9. J. Zhang, Y. Cheng, S. He, and B. Ran, " Improving method of real-time
offset tuning for arterial signal coordination using probe trajectory data, "
Advances in Mechanical Engineering, vol. 9, no. 1, p. 1687814016683355,
Jan. 2017, doi: 10.1177/1687814016683355.
10. S. E. Shladover, " Connected and automated vehicle systems: Introduction
and overview, " Journal of Intelligent Transportation Systems, vol. 22, no. 3,
pp. 190-200, May 2018, doi: 10.1080/15472450.2017.1336053.
www.ite.org July 2021 47
http://www.ite.org

ITE Journal - July 2021

Table of Contents for the Digital Edition of ITE Journal - July 2021

ITE Journal - July 2021 - 1
ITE Journal - July 2021 - 2
ITE Journal - July 2021 - 3
ITE Journal - July 2021 - 4
ITE Journal - July 2021 - 5
ITE Journal - July 2021 - 6
ITE Journal - July 2021 - 7
ITE Journal - July 2021 - 8
ITE Journal - July 2021 - 9
ITE Journal - July 2021 - 10
ITE Journal - July 2021 - 11
ITE Journal - July 2021 - 12
ITE Journal - July 2021 - 13
ITE Journal - July 2021 - 14
ITE Journal - July 2021 - 15
ITE Journal - July 2021 - 16
ITE Journal - July 2021 - 17
ITE Journal - July 2021 - 18
ITE Journal - July 2021 - 19
ITE Journal - July 2021 - 20
ITE Journal - July 2021 - 21
ITE Journal - July 2021 - 22
ITE Journal - July 2021 - 23
ITE Journal - July 2021 - 24
ITE Journal - July 2021 - 25
ITE Journal - July 2021 - 26
ITE Journal - July 2021 - 27
ITE Journal - July 2021 - 28
ITE Journal - July 2021 - 29
ITE Journal - July 2021 - 30
ITE Journal - July 2021 - 31
ITE Journal - July 2021 - 32
ITE Journal - July 2021 - 33
ITE Journal - July 2021 - 34
ITE Journal - July 2021 - 35
ITE Journal - July 2021 - 36
ITE Journal - July 2021 - 37
ITE Journal - July 2021 - 38
ITE Journal - July 2021 - 39
ITE Journal - July 2021 - 40
ITE Journal - July 2021 - 41
ITE Journal - July 2021 - 42
ITE Journal - July 2021 - 43
ITE Journal - July 2021 - 44
ITE Journal - July 2021 - 45
ITE Journal - July 2021 - 46
ITE Journal - July 2021 - 47
ITE Journal - July 2021 - 48
ITE Journal - July 2021 - 49
ITE Journal - July 2021 - 50
ITE Journal - July 2021 - 51
ITE Journal - July 2021 - 52
https://www.nxtbook.com/ygsreprints/ITE/ite-journal-july-2021
https://www.nxtbook.com/ygsreprints/ITE/ite-journal-june-2021
https://www.nxtbook.com/ygsreprints/ITE/ite-journal-may-2021
https://www.nxtbook.com/ygsreprints/ITE/ite-journal-april-2021
https://www.nxtbook.com/ygsreprints/ITE/ITE_Mar2021
https://www.nxtbook.com/ygsreprints/ITE/ITE_Jan2021
https://www.nxtbook.com/ygsreprints/ITE/ITE_Dec2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_Nov2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_Oct2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_Sept2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_Aug2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_July2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_June2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_May2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_April2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_March2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_February2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_January2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_December2019
https://www.nxtbook.com/ygsreprints/ITE/G110939_ITE_November2019
https://www.nxtbook.com/ygsreprints/ITE/G110110_ITE_October2019
https://www.nxtbook.com/ygsreprints/ITE/G110109_ITE_September2019
https://www.nxtbook.com/ygsreprints/ITE/G108559_ITE_August2019
https://www.nxtbook.com/ygsreprints/ITE/G108250_ITE_July2019
https://www.nxtbook.com/ygsreprints/ITE/G107225_ITE_June2019
https://www.nxtbook.com/ygsreprints/ITE/G104039_ITE_May2019
https://www.nxtbook.com/ygsreprints/ITE/G104038_ITE_April2019
https://www.nxtbook.com/ygsreprints/ITE/G104036_ITE_March2019
https://www.nxtbook.com/ygsreprints/ITE/G103582_ITE_February2019
https://www.nxtbook.com/ygsreprints/ITE/G102868_ITE_January2019
https://www.nxtbook.com/ygsreprints/ITE/G100155_ITE_December2018
https://www.nxtbook.com/ygsreprints/ITE/G100154_ITE_November2018
https://www.nxtbook.com/ygsreprints/ITE/G99495_ITE_October2018
https://www.nxtbook.com/ygsreprints/ITE/G98028_ITE_September2018
https://www.nxtbook.com/ygsreprints/ITE/G97366_ITE_August2018
https://www.nxtbook.com/ygsreprints/ITE/G96287_ITE_July2018
https://www.nxtbook.com/ygsreprints/ITE/G94315_ITE_June2018
https://www.nxtbook.com/ygsreprints/ITE/G93877_ITE_May2018
https://www.nxtbook.com/ygsreprints/ITE/G93065_ITE_Apr2018
https://www.nxtbook.com/ygsreprints/ITE/G91484_ITE_Mar2018
https://www.nxtbook.com/ygsreprints/ITE/G89434_ITE_Feb2018
https://www.nxtbook.com/ygsreprints/ITE/G86608_ITE_Jan2018
https://www.nxtbookmedia.com