10 as shown in trace 18 vehicle brakes are applied at a time t 1 and remain applied until removed at a time t 5 of course those skilled in the art will appreciate that the driver of vehicle 10 in response to driving conditions controls the application and removal of brakes thus the sequence shown in trace 18 depicts only one of numerous possible braking scenarios in addition trace 18 indicates the application and removal of brakes from the driver 39 s perspective those skilled in the art will appreciate that the actual application of braking forces to vehicle 10 may be pulsed or otherwise varied in accordance with automatic braking systems while brakes are applied as indicated in trace 18 as shown in trace 20 lower brake lights 14 16 are continuously activated in accordance with the application of vehicle brakes specifically both of the lower lights 14 16 are activated at time t 1 and remain continuously activated until time t 8 at time t 8 lights 14 16 are deactivated thus whenever vehicle brakes are applied lower lights 14 16 are activated whenever vehicle brakes are not applied lower lights 14 16 are not activated turn indicators notwithstanding traces 22 illustrate the operation of chmsl 12 chmsl 12 operates in a different manner than lower lights 14 16 whenever vehicle brakes are not applied chmsl 12 is deactivated in an identical manner to the lower brake lights 14 16 however when vehicle brakes are initially applied as shown at time t 1 chmsl 12 begins operation in a flashing mode in particular chmsl 12 is activated from time t 1 to a time t 2 deactivated from time t 2 to a time t 3 and so on.