For added visibility, this handy safety triangle is the fast answer.
Battery powered flashing LED reflective safety triangle fastens in seconds with the included magnets, double stick Velcro, or hanging loop. Apply it to slow-moving vehicles, back-pack blowers & sprayers. Leave it on, or save it up for another day and roll it up to store in the tool-box. 13-inch sides triangle; 3 light patterns: steady-on, slow flashing, quick flashing. Note: Uses (2) AA batteries, not included.