The flared or widened section of a minor road where it intersects with a major road. A splay is engineered to provide a clear, unobstructed sightline for drivers waiting at the junction, ensuring they can see approaching cross-traffic before pulling out. Highway designers calculate the required splay dimensions based on the speed limit of the major road and the stopping sight distance.
Heard on the job
The developer had to purchase an additional strip of frontage to achieve the required visibility splay for the new subdivision entrance.
Also heard as
- visibility splay
- sight triangle