Speed Limit 40 Sign - Official U.S. Regulatory Road Sign #3408692 (License: Personal Use)

This is a standard regulatory road sign as defined by the Manual on Uniform Traffic Control Devices (MUTCD), featuring a white background with bold black uppercase text “SPEED LIMIT” above the numerals “40”. The sign has a black border and uses a sans-serif font for optimal readability at highway speeds. It is typically mounted on posts or overhead gantries along roads where the legal speed cap is 40 miles per hour.

Used on suburban arterials, rural highways, or school zones where a 40 mph limit is enforced; commonly referenced in driver’s education, traffic law resources, and municipal signage guides.