Provided is a pair of shoes (e.g., sandals) each comprising a strap formed on a top of a sole, a plurality of light emitting members spaced along the strap, a battery mounted in a compartment of the sole, a switch provided on one side of the sole, and a circuit including the battery, the light emitting members, and the switch. A person wearing the shoes may turn on the switch to enable the circuit for causing the light emitting members to flash continuously in order to warn drivers behind the person.