Abstract: A system for optimizing traffic signal timing using telemetry includes: wirelessly connected devices (WCDs), traffic operations centers (TOCs) controlling one or more traffic signals, and control modules storing and continuously executing control logic in a closed loop. The control logic continuously receives real-time WCD telemetry data and performs real-time processing of the telemetry data to match the telemetry data to physical locations. Processed telemetry data is aggregated to determine WCD trajectories. The system selectively performs time-of-day (TOD), offset, and green split optimizations, and receives the WCD trajectories and outputs of the TOD, offset, and green split optimization within an API. The system generates an optimized signal plan from data from the API, and verifies the optimized signal plan. The optimized signal plan is received by the TOCs and selectively uploaded to the traffic signals.

Abstract: A method for providing a collision alert is provided. The method includes: receiving position information of one or more vehicles; determining, based on the position information and road information, that a vehicle is about to encounter another vehicle at a curve; and providing the collision alert to the vehicle indicating a potential collision at the curve.

Abstract: An icon position interchanging method includes receiving a first sliding signal triggered by a first dragging operation over a first icon and a second sliding signal triggered by a second dragging operation over a second icon, determining a first sliding vector according to the first sliding signal and a second sliding vector according to the second sliding signal, judging whether the first sliding signal and the second sliding signal satisfy a preset condition according to a first length of the first sliding vector and a second length of the second sliding vector, and performing position interchanging on the first icon and the second icon if the first sliding signal and the second sliding signal satisfy the preset condition.

Abstract: Image displaying methods, devices, and computer-readable non-transitory storage media containing instructions for implementing the displaying methods are disclosed. In one embodiment, a method includes acquiring an image upon receipt of a request for displaying the image, locating in the image an image region composed of at least three adjoining monochromatic sections, when a difference in color value between any two adjacent ones of the adjoining monochromatic sections in the image region is less than a threshold value, calculating one or more target color values using color values of the monochromatic sections in the image region, replacing color values of the image region with the target color values to generate a target image, and displaying the target image.

Abstract: An icon position interchanging method includes receiving a first sliding signal triggered by a first dragging operation over a first icon and a second sliding signal triggered by a second dragging operation over a second icon, determining a first sliding vector according to the first sliding signal and a second sliding vector according to the second sliding signal, judging whether the first sliding signal and the second sliding signal satisfy a preset condition according to a first length of the first sliding vector and a second length of the second sliding vector, and performing position interchanging on the first icon and the second icon if the first sliding signal and the second sliding signal satisfy the preset condition.

Abstract: A method for providing a collision alert is provided. The method includes: receiving position information of one or more vehicles; determining, based on the position information and road information, that a vehicle is about to encounter another vehicle at a curve; and providing the collision alert to the vehicle indicating a potential collision at the curve.

Abstract: Image displaying methods, devices, and computer-readable non-transitory storage media containing instructions for implementing the displaying methods are disclosed. In one embodiment, a method includes acquiring an image upon receipt of a request for displaying the image, locating in the image an image region composed of at least three adjoining monochromatic sections, when a difference in color value between any two adjacent ones of the adjoining monochromatic sections in the image region is less than a threshold value, calculating one or more target color values using color values of the monochromatic sections in the image region, replacing color values of the image region with the target color values to generate a target image, and displaying the target image.