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# intersections

## Find the maximum number of intersections lines

Improve Article Save Article Like Article Improve Article Save Article Like Article Given an N horizontal line segments are arranged on the X-axis of a 2D plane. The start and end point of each line segment is given in an Nx2 matrix lines, the task is to find the maximum number of intersections possible of any vertical line with the given N line segments.Examples:Input: N = 4, lines = {{1, 3}, {2, 3}, {1, 2}, {4, 4}}Output: 3Explanation: A vertical line at X = 2 passes through {1, 3}, {2, 3}, {1, 2}, ie three of the…

## New LiDAR system pinpoints pedestrian behavior to improve efficiency and safety at intersections

Credit: CC0 Public Domain Pedestrian safety is critical to improving walkability in cities. To that end, NITC researchers have developed a system for collecting pedestrian behavior data using LiDAR sensors. Tested at two intersections in Texas and soon to be tested at another in Salt Lake City, Utah, the new software created by a multi-university research team is able to reliably observe pedestrian behavior and can help…

## Maximise count of intersections possible from the given endpoints of a line

#include <iostream>using namespace std;  #include <ext/pb_ds/assoc_container.hpp> // Common file#include <ext/pb_ds/tree_policy.hpp>#include <functional> // for less#include <iostream>  using namespace std;using namespace __gnu_pbds;  template <class T>using oset    = tree<T, null_type, greater_equal<T>, rb_tree_tag,           tree_order_statistics_node_update>;  void maximumIntersection(int EndPoints, int N){    oset<int> st;    int ans = 0;              map<int,…

## ‘Bike boxes’ can improve urban intersections for cyclists, research shows

Depiction of a bike box. Credit: David Hurwitz, OSU College of Engineering A roadway setup known as the "bike box," a painted-off area for bicyclists at the front of an intersection, can help them stay safe at urban, signalized intersections, research by the Oregon State University College of Engineering indicates.…

## Four stop signs at intersections are one too many, suggests researcher

Credit: Pixabay/CC0 Public Domain For most drivers in the United States, obeying a stop sign upon approaching an intersection is an unavoidable annoyance. But for George Mason University Finance Professor Jiasun Li, it's a problem waiting to be solved.

## An algorithm to optimize the flow of vehicles through dynamic unsignalized intersections

Image showing how GAMEOPT works compared to traffic lights. The light blue regions denote the control zone. The team showed that at identical input traffic flow levels, their approach outperforms even traffic light infrastructure, resulting in less queues and enabling smooth traffic flow. Credit: Suriyarachchi et al. Managing road intersections in crowded and dynamic environments, such as urban areas, can be highly…