Navjeet Kaur (30), a resident of Ludhiana, was thrown off the bike along with her husband and son when a truck rammed into them, an officer from Jalandhar Police Commissionerate said.
Kaur died on the spot. The injured have been admitted to a hospital where their condition is stable, the officer said.
A search is on to establish the identity of the truck owner and driver, and a case against unknown persons has been registered, the officer added.
The body has been sent for postmortem and a probe into the matter is on.