Just after 7 am Friday a CISD bus was westbound on FM 2090 at Philmore (between Tommy Smith and Firetower). The bus driver was picking up Crighton Elementry students and had the lights activated. A female driver in a pickup was eastbound and stopped for the bus. A male driver in a Mazda who also eastbound did not see the pickup stopped due to the early morning sun. He slammed into the rear of the pickup driving it into the rear of the bus and into the ditch. The rear bumper of the bus struck the pickup windshield just missing the driver. Twenty-three students on the bus were uninjured. The female in the pickup was transported to the hospital in stable condition. The driver of the Mazda was uninjured. FM 2090 was closed and reopened at 8:30 am. DPS is investigating the crash.