A truck and three cars have collided on Lane Cave Road at Macquarie Park near to the M2 off-ramp. The truck was carrying dozens of bags carrying cement power which had spilt across the road. Several lanes in both direction had been closed causing major delays this morning. A driver was trapped underneath the wreckage and another was taken to Royal North Shore Hospital suffering shoulder and neck injuries. The scene has since been cleared but to discuss it further, we were joined by  Dave Wright, senior media spokesperson from Train Support Management centre.