Systemic Application of Multiple Low-Cost Countermeasures
at Stop-Controlled Intersections

This systemic approach to intersection safety involves deploying a package of multiple low-cost countermeasures, including enhanced signing and pavement markings, at a large number of stop-controlled intersections within a jurisdiction. These countermeasures increase driver awareness and recognition of the intersections and potential conflicts.

There are several benefits to systemically applying multiple low-cost countermeasures at stop-controlled intersections, including,

• Resources are maximized because the treatments are low cost.
• A high number of intersections can receive treatment.
• Improvements are highly cost-effective, with an average benefit-cost ratio of 12:1, even assuming a conservative 3-year service life.¹

The low-cost countermeasures for stop-controlled intersections generally consist of the following treatments:

On the Through Approach

• Doubled-up (left and right), oversized advance intersection warning signs, with supplemental street name plaques (can also include flashing beacon).
• Retroreflective sheeting on sign posts.
• Enhanced pavement markings that delineate through lane edge lines.

On the Stop Approach

• Doubled-up (left and right), oversized advance ”Stop Ahead“ intersection warning signs (can also include flashing beacon).
• Doubled-up (left and right), oversized Stop signs.
• Retroreflective sheeting on sign posts.
• Properly placed stop bar.
• Removal of vegetation, parking, or obstructions that limit sight distance.
• Double arrow warning sign at stem of T-intersections.