A woman was critically hurt Wednesday morning after being struck by an 18-wheeler as she entered a crosswalk in Garland, and police are searching for the driver.

The incident took place about 6:30 a.m. as the unidentified pedestrian, who had been walking southbound on Shiloh Road walked into the intersection at Arapaho Road.

An 18-wheeler traveling west on Arapaho turned north onto Shiloh and struck the woman, police said. The vehicle continued north on Shiloh and did not stop.

The woman was hospitalized in critical condition. A witness told police the woman had had the “walk” sign but that the truck failed to yield.

Police do not know whether the driver knew the woman was hit and if so, why the driver failed to stop.

Anyone with information is asked to contact the Garland Police Department’s hit-and-run unit at 972-205-4063.