A Policy on Geometric Design of Highways and Streets - Seventh Edition; Incorporating Errata: October 2019

Abstract

Public works projects of all scales are more sensitive to funding than ever before.

In many cases, cost magnitude and cost effectiveness play increasingly large roles in scoping projects.

Often, reconstruction projects are limited in scope or available funding, or may be affected by physical constraints or social or environmental considerations.

In some locations, especially constrained locations, designing to the criteria recommended herein simply is not feasible.

Adaptive, flexi- ble, and cost-effective designs customized to each project context are encouraged.

Flexibility in the application of design criteria herein is recommended to encourage a sustainable approach to highway design decision making by weighing and balancing choices among the environmental, economic, and social aspects while meeting the project’s performance objectives.

Designers should recognize the joint use of transportation corridors by motorists, pedestrians, bicyclists, public transit, and freight vehicles.

Designers are encouraged to consider not only vehicular movement, but also movement of people, distribution of goods, and provision of es- sential services.

A more comprehensive transportation program is thereby emphasized.