Adjustment of a traffic signal control plan based on local environmental conditions

摘要

Embodiments include a method for adjusting a signal control plan for a traffic signal at an intersection based on local environmental conditions is provided. The method includes operating the traffic signal based on a standard signal control plan, receiving an indication of an adverse environmental condition, and determining if the standard signal control plan should be adjusted based on the indication of the adverse environmental condition. Based on determining that the standard signal control plan should be adjusted based on the indication of the adverse environmental condition, the method includes creating a modified signal control plan based on the adverse environmental condition and the standard signal control plan and operating the traffic signal based on the modified signal control plan.

主权项

1. A method for adjusting a signal control plan for a traffic signal at an intersection based on local environmental conditions, the method comprising:
operating the traffic signal based on a standard signal control plan; receiving an indication of an adverse environmental condition; determining if the standard signal control plan should be adjusted based on the indication of the adverse environmental condition; based on determining that the standard signal control plan should be adjusted based on the indication of the adverse environmental condition, creating a modified signal control plan based on the adverse environmental condition and the standard signal control plan; operating the traffic signal based on the modified signal control plan by changing a length of at least one of a yellow light time and a green light time within a length of a phase that includes at least three sub-phases that correspond to a red light time and the yellow light time and the green light time; determining whether the adverse environmental condition concluded; based on determining that the adverse environmental condition concluded, operating the traffic signal based on the standard signal control plan; and based on determining that the adverse environmental condition has not concluded, operating the traffic signal based on the modified signal control plan,
wherein the indication of the adverse environmental condition is received from a sensor connected to roadside equipment disposed at the intersection, andwherein the determination of whether the signal control plan should be adjusted based on the adverse environmental condition is based on one or more of:a severity of the adverse environmental condition;a location of the adverse environmental condition;a number of indications received of for the adverse environmental condition; anda source of the indication of an adverse environmental condition.