Related Clues:

• Turns that may be prohibited
• Letters after sigmas
• Turns across traffic
• Sorority T's
• They follow sigmas
• Some lanes allow only them
• T's, in the Greek alphabet
• Some jabs in boxing
• Some boxing jabs
• Greek Ts
• Some short-lived particles
• Some driving instructions
• T's, in Thessaloniki
• T's, in sorority names