At stop-controlled intersections, how far from the edge of the major road's traveled way should the vertex of the departure sight triangle on the minor road be?

At stop-controlled intersections, how far from the edge of the major road's traveled way should the vertex of the departure sight triangle on the minor road be?

• A. 10.5 ft
• B. 14.5 ft
• C. 18.5 ft
• D. 20.0 ft

Answer: (B)

The correct answer is based on standard design practices for sight distance at stop-controlled intersections. The vertex of the departure sight triangle on the minor road should be set at a distance that ensures drivers have adequate visibility of approaching traffic on the major road when they are preparing to enter or cross it. For stop-controlled intersections, the standard distance from the edge of the traveled way of the major road for the vertex of the departure sight triangle typically aligns with 14.5 feet. This distance enables the driver on the minor road to see oncoming vehicles from the major road while maintaining a safe position at the stop line. Selecting this distance is crucial for ensuring safe decision-making by drivers; if the sight triangle is too short, visibility can be obstructed, leading to potential safety hazards for vehicles entering the intersection. Understanding these design parameters is important for roadway engineering, as they directly influence traffic safety and operational efficiency. The other distances provided do not conform to the typical guidelines and would either reduce visibility or not align with established standards, potentially compromising safety at the intersection.

The correct answer is based on standard design practices for sight distance at stop-controlled intersections. The vertex of the departure sight triangle on the minor road should be set at a distance that ensures drivers have adequate visibility of approaching traffic on the major road when they are preparing to enter or cross it.

For stop-controlled intersections, the standard distance from the edge of the traveled way of the major road for the vertex of the departure sight triangle typically aligns with 14.5 feet. This distance enables the driver on the minor road to see oncoming vehicles from the major road while maintaining a safe position at the stop line.

Selecting this distance is crucial for ensuring safe decision-making by drivers; if the sight triangle is too short, visibility can be obstructed, leading to potential safety hazards for vehicles entering the intersection. Understanding these design parameters is important for roadway engineering, as they directly influence traffic safety and operational efficiency.

The other distances provided do not conform to the typical guidelines and would either reduce visibility or not align with established standards, potentially compromising safety at the intersection.