No sneaking sign, black and red isolated silhouette

warning, notice, caution, alert, rule, restriction, prohibition, forbid, security, safety, guard, patrol, boundary, entry, control, monitor, lookout, vigilance, awareness, discipline, order, guideline, signage, symbol, badge, emblem, mark, message, instruction, command, stop, barrier, limit, attention, law, policy, regulation, guideline, cautionary, directive