Patent ID: 7468677

Claim:
An end cap warning signal assembly comprising: an end cap, the end cap having a periphery, the end cap comprising a plurality of M light emitting diodes, M being an integer of at least one, at least one light emitting diode being engaged to each of the front, the first side, and the second side, the M light emitting diodes receiving power from a power source, the M light emitting diodes arranged in N light emitting diode groups, N being an integer of at least one light emitting diode groups 1 , 2 , 3 , . . . , N arranged sequentially about the periphery; and a first controller operatively connected with the N groups of light emitting diodes, the first controller programmed to activate the N groups of light emitting diodes, whereby: each light emitting diode has at least 6 states, the first state having a first intensity level, the second state having a second intensity level, the third state having a third intensity level, the fourth state having the second intensity level, the fifth state having the first intensity level, and the sixth state having an off level, each of the 6 states having a predetermined duration of time T; for light emitting diode groups 1 to N the light emitting diodes of each Nth light emitting diode group beginning at an off level, the light emitting diodes of each Nth light emitting diode group proceeding from the off level to the first state through the sixth state, each light emitting diode group 1 to N being activated sequentially in an activation sequence, each Nth light emitting diode group activating its first state at T seconds after the (N−1)th light emitting diode group activated its first state.