Abstract: There is provided a method of determining the state of a signal lamp. The method includes receiving time series data corresponding to an electrical signal used to power a signal lamp. The state of the signal lamp can switch from one of the following states to another of the following states: an on state, an off state, and a flashing state. The method also includes determining the state of the signal lamp, based at least in part on both the time series data and an amplitude value of the electrical signal relative to an amplitude-change threshold value over a determined number of amplitude changes.

Abstract: There is provided a method of determining the state of a signal lamp. The method includes receiving time series data corresponding to an electrical signal used to power a signal lamp. The state of the signal lamp can switch from one of the following states to another of the following states: an on state, an off state, and a flashing state. The method also includes determining the state of the signal lamp, based at least in part on both the time series data and an amplitude value of the electrical signal relative to an amplitude-change threshold value over a determined number of amplitude changes.

Abstract: A self-mounting automobile window screen for placing between opposing parts of an automobile window frame is disclosed. The window-mounting screen comprises of flexible mesh screen attached to a rubber base and foam rope at the remaining edges. The screen is made to fit a specific model of vehicle and installed into the window channels manually. This provides a resilient but sturdy means to temporarily create a barrier and seal around the window opening when the vehicle is stationary. The screen can be anchored and detached repeatedly without causing damage to the vehicle or the screen. The screen can be conveniently stored in a nylon bag when not in use.