Abstract: Adjusting the intensity of the rear fog lights of a vehicle to optimize intensity based on the precipitation rate and the speed of the vehicle in order to increase the visibility of drivers of the following vehicles. The speed of the vehicle is detected with a speed sensor, a rain value is determined using a rain sensor, and the optimal light intensity is calculated taking into account vehicle specific turbulence characteristics. The rear fog lights are then modulated according to the optimal light intensity to maximize the visibility of the fog lights to any following vehicles.

Abstract: Adjusting the intensity of the rear fog lights of a vehicle to optimize intensity based on the precipitation rate and the speed of the vehicle in order to increase the visibility of drivers of the following vehicles. The speed of the vehicle is detected with a speed sensor, a rain value is determined using a rain sensor, and the optimal light intensity is calculated taking into account vehicle specific turbulence characteristics. The rear fog lights are then modulated according to the optimal light intensity to maximize the visibility of the fog lights to any following vehicles.

Abstract: Aspects automatically determine aptitude or attention level of a user as a function of time of day, user attributes and external stimuli. Impact values are determined relative to user aptitude from stimulus associated with event activity as a function of user attributes that include levels of attention, rest and experienced stress. The impact values have a negative sign if beneficial to the user aptitude, or a positive sign if detrimental. Baseline time adjustment factors are selected to match user demographic data and event activity time or duration. A time shift value is determined as a sum of the impact values. An effective time of day value is determined by adding the time shift value to the baseline time adjustment factors of matching time values. An effective time of day is generated by adding the determined effective time of day value to a current time of day.