Umair Durrani

12 Questions 30 Answers 0 Followers

Questions related from Umair Durrani

Are there any self-driving car trajectory data available for download?

Just like the normal vehicle trajectory data, there must be some datasets that contain vehicle trajectories for self driving cars. These datasets could potentially help in determining which...

20 September 2018 6,131 2 View

Is there a VISSIM add-in to simulate autonomous vehicles?

If yes, what car-following/ lane-changing logic does it use?

11 March 2017 1,821 5 View

What is the definition of an action point in observed vehicle trajectory?

In the following reference, Todosiev, E.P., 1963. The action point model of the driver-vehicle system (Doctoral dissertation, The Ohio State University). on page 16, an idealized relative...

29 April 2016 9,613 2 View

Is there any example which shows the step by step of applying Genetic Algorithm to calibrate VISSIM car following parameters?

There are many papers that describe the methodology. But is there any online example that shows all the steps? Or a free program that could be downloaded to use with VISSIM?

22 February 2016 7,008 2 View

What does the perception threshold mean in Wiedemann model?

In the attached file there are 2 images. On the left is the relative speed vs front to rear distance from following reference: Wiedemann, R., Reiter, U., 1992. Microscopic traffic simulation: the...

18 December 2015 2,665 6 View

What is the time lag in GHR car following the model composed of? Only reaction time or something more?

Aghabayk et. al (2015) explained that 'T' is the driver's reaction time in GHR model (page 86). While in the article 'Traffic Dynamics. Studies in Car Following', Chandler et. al. (1958) stated...

15 December 2015 2,157 2 View

Are data mining techniques for time-series useful in developing a data-driven car-following model?

Can we apply any data mining technique on time-series data such as provided by NGSIM project to model the car-following behavior i.e. uninfluenced driving, following a lead vehicle, emergency...

07 December 2015 7,594 2 View

Given vehicle trajectory data, how does one determine the interaction range beyond which following vehicle is uninflluenced by lead vehicle?

Interaction range = bumper-to bumper distance between vehicles

30 October 2015 8,300 7 View

Is it possible to estimate all 10 calibration components (CC0~CC9) in VISSIM using vehicle trajectory data?

Wiedemann 99 model has 10 calibration components CC0 - CC9 in VISSIM driver behavior car-following options for freeways. Can we use vehicle trajectory data e.g. those available on NGSim project's...

16 October 2015 9,552 7 View

Can we do traffic microsimulations in R or Python?

Specifically, can we do car-following simulations? I have read in different articles e.g. Optimization of Wiedemann and Fritzsche car-following models for emission estimation that a car-following...

08 July 2015 7,062 10 View

How was the Wiedemann's Car following model implemented in VISSIM?

What were the modifications made in the model to implement in VISSIM? Also, are there any other English reports/ articles available which explain the 74 and 99 models other than this...

04 July 2015 8,633 21 View

Machine Learning in Transportation

I am looking for machine learning examples in the field of transportation/driver behaviour. Please share code with/without papers that you contributed to or know of in ML in transportation. Thank you!

01 January 1970 2,358 3 View