The traffic direction indicator is an integral part of modern ... However, it was soon taken up, free, and became part of vehicle design until superseded by the blinking front and rear lights.

This Second Edition Note is part of a series of notes that are meant to assist World Bank task managers in the selection and design of performance indicators. This note discusses the design and ...

NASA is asking creators from around the world to design a zero-gravity indicator that will be launched into space on the Artemis Two test flight. A zero gravity indicator is a small, plush item ...