Analyzing the Double-T Junction and Double-T Grid

In this video I analyze the performance of various city traffic grids and see how they compare to the Double-T Grid. I start out by looking at the basic differences between the Double-T Junction and conventional 1-Way and 2-Way traffic intersections. Then I use a simplified deterministic model of a city to explore how long it would take drivers to navigate a city with a Double-T Grid and compare that with conventional grids. I found that even though vehicles in the deterministic single-vehicle model cannot take advantage of the improved throughput of the Double-T Junction, it still makes possible faster cross-city travel than in conventional city grids.

Making this video (specifically the idealized city simulator) was pivotal for me, I hadn't fully understood the implications of the behaviour of the traffic lights in a Double-T Grid before I'd seen the simulator running. Afterwards though I began to realise that instead of being just an intersection curiosity that might look good in a city simulator or in isolated instances in a real city, it has the potential to substantially improve real-world traffic flow on a large scale.

0:00 Analyzing the Double-T Grid
1:00 Double-T Junction Advantages
1:55 Simplified Mathematical Model of a City
3:31 Average Traffic Light Wait at a 2-Way Traffic Intersection
4:48 Average Traffic Light Wait at a 1-Way Traffic Intersection
5:30 Average Traffic Light Wait at the Double-T Junction
6:17 Model 1: 2-Way Traffic City
8:19 Compare Model 1 (2-Way Traffic) & 2 (1-Way Traffic) Cities
10:15 Compare 1-Way Traffic City with Double-T Grid City
11:43 Rectangular Grid City Comparison
13:11 Improving the Rectangular Grid City
14:45 Introducing the Green Wave traffic Grid
15:34 Comparing the Green Wave with non-Green Wave 1-Way Systems
17:04 Comparing the Green Wave System with a Double-T Grid
20:08 Hybrid City Grids
21:17 Still Unconvinced, What To Do
23:29 Motivation for Double-T Grids
23:58 Thanks For Watching

Check out some of my other videos on the Double-T Junction and Grid:

Full Introduction: https://www.youtube.com/watch?v=jkQqyJwv7VE
Introducing the Double-T Junction and Grid in Cities: Skylines: https://www.youtube.com/watch?v=m4uZnP7_Ltg
Double-T Development and Advanced Grids in Cities: Skylines: https://www.youtube.com/watch?v=BYJSpSLmEeU
Variations on the Double-T Junction: https://www.youtube.com/watch?v=qcj2pV-Gra0
All the problems with the Double-T Junction and Grid, and most of the solutions: https://www.youtube.com/watch?v=qVINw5biQMI
No-comment LongPlay of various views of the Double-T Grid: https://www.youtube.com/watch?v=6BkQT4tSSN8

Or, check out my full double-T Junction and Grid Playlist: https://www.youtube.com/watch?v=Aj4wpG9A2Qk&list=PLsn5pv-2wrSS5G-GAJBrNFSpt3o_VpHM3

Видео Analyzing the Double-T Junction and Double-T Grid канала RichAntDav