Traffic signs are an important part of road safety, providing drivers with information about the rules of the road. The crossword solutions for the term 'traffic sign' include SLO (3 letters), STOP (4 letters), YIELD (5 letters), SLOW (4 letters), MERGE (5 letters), ONEWAY (6 letters), NOPARKING (9 letters), and TOWAWAYZONE (11 letters). SLO stands for speed limit, STOP indicates that drivers must come to a complete STOP, YIELD means that drivers must give way to other vehicles, SLOW is a warning to reduce speed, MERGE is a reminder to join traffic from another road, ONEWAY indicates that drivers can only travel in one direction, NOPARKING is a prohibition against parking, and TOWAWAYZONE is an area where vehicles may be towed away.