A time-segmented signal timing method for a traffic light, comprising: obtaining traffic volume data of a target intersection in each period of time of N consecutive days, N being an integer greater than 1; performing curve fitting on the traffic volume data to determine a traffic volume curve corresponding to the target intersection of each day; characterized in that, determining target points in the traffic volume curve with second derivatives equal to zero; and performing time-segmented signal timing on a traffic light at the target intersection based on time points corresponding to the target points; wherein performing the time-segmented signal timing on the traffic light at the target intersection based on the time points corresponding to the target points comprises: in response to a number of the target points being greater than a first threshold, determining a first derivative value corresponding to the traffic volume curve at each target point; extracting target points of a number equal to the first threshold from the target points based on the first derivative value corresponding to each target point, wherein absolute values of the determined first derivative values are sorted in a descending order, and target points corresponding to first P absolute values are determined as the extracted target points, P being the first threshold; and performing the time-segmented signal timing on the traffic light at the target intersection based on time points corresponding to the target points extracted. obtaining traffic volume data of a target intersection in each period of time of N consecutive days, N being an integer greater than 1; performing curve fitting on the traffic volume data to determine a traffic volume curve corresponding to the target intersection of each day; characterized in that, determining target points in the traffic volume curve with second derivatives equal to zero; and performing time-segmented signal timing on a traffic light at the target intersection based on time points corresponding to the target points; wherein performing the time-segmented signal timing on the traffic light at the target intersection based on the time points corresponding to the target points comprises: in response to a number of the target points being greater than a first threshold, determining a first derivative value corresponding to the traffic volume curve at each target point; extracting target points of a number equal to the first threshold from the target points based on the first derivative value corresponding to each target point, wherein absolute values of the determined first derivative values are sorted in a descending order, and target points corresponding to first P absolute values are determined as the extracted target points, P being the first threshold; and performing the time-segmented signal timing on the traffic light at the target intersection based on time points corresponding to the target points extracted. in response to a number of the target points being greater than a first threshold, determining a first derivative value corresponding to the traffic volume curve at each target point; extracting target points of a number equal to the first threshold from the target points based on the first derivative value corresponding to each target point, wherein absolute values of the determined first derivative values are sorted in a descending order, and target points corresponding to first P absolute values are determined as the extracted target points, P being the first threshold; and performing the time-segmented signal timing on the traffic light at the target intersection based on time points corresponding to the target points extracted.