| 摘要 |
In one embodiment, a race set is described. The race set may comprise a portable race management device, comprising: a detachable lane defining element configured to be actuated; a starting indicator; a finishing indicator; and circuitry configured to receive start and/or finish signals via actuation of the detachable lane defining element, control actuation of the starting indicator upon race starting, and control actuation of the finishing indicator upon race finishing. Various alternative embodiments and alternative example race sets are also included. |
