The streets of the ancient city of Harappa, part of the Indus Valley Civilization (2500–2000 BCE), were notably straight and intersected at right angles, dividing the city into rectangular blocks.

The roads were paved with fired bricks, and even lamp posts have been discovered at regular intervals—indicating that street lighting may have existed at that time.

Harappa, along with Mohenjo-daro, was one of the largest settlements of the Indus Valley Civilization and among the earliest major cities in the world.

This reflects the advanced urban planning of the Harappan people, with a well-organized street system and scientifically constructed public infrastructure.