How many modes do the lights offer?

Depends on the item:

         Boulevard: 3 modes each: High, Low, Slow Flash

         Avenue COB:  3 modes each: High, Low, Slow Flash

         Avenue Dual: 4 modes for both white and red: High, Low, Slow and Fast Flash

         Street:  5 modes front: Low, Medium, High Steady, Slow & Fast Flash   5 modes rear: Low, High, Pulse Flash, 2 Low & 1 High Flash, High Steady

         Alley:  5 modes front: Low, Medium, High Steady, Slow & Fast Flash   8 modes rear: Low, =High, Fast & Pulse Fast, 2 LED Rotational flash, 2 Low & 1 High Flash, Low, High Steady