This excerpt from an Integrated Master Schedule (IMS) has been designed to show what sort of information that can help identify schedule drivers? (IMAGE DESCRIPTION: A Gantt chart for a sample project displays a project with 8 tasks, plus project start and project end milestones. All tasks have a finish-to-start relationship with their successors, unless otherwise noted. The project starts on January 1 2015 and finishes on January 29 2015. Task A starts on January 1 2015, finishes on January 5 2015, has 5 days of float, and has Task D as a successor. Task B starts on January 4 2015, finishes on January 7 2015, has zero float, and has Task E as a successor. Task C starts on January 4 2015and finishes on January 7 2015, has zero float, and has Task F as a successor. Task D starts on January 6 2015, finishes on January 15 2015, has zero float and has Task G as a successor. Task E starts on January 8 2015, finishes on January 20 2015, has zero float, and has Task H as a successor. Task F starts on January 8 2015, finishes on January 21 2015, has zero float, and has Task H as a successor with a finish-to-finish relationship. Task G starts on January 16 2015, finishes on January 25 2015, has 7 days of float and has Task H as a successor. Task H starts on January 29 2015, finishes on January 29 2015, has zero float and has a finish-to finish relationship with its successor, the project end. Tasks B, E, H, and the project end milestone are all color-coded red.)

The IMS does not provide information on schedule drivers but merely provides updates to the schedule dates.

This chart shows the baseline schedule, and all tasks on the baseline schedule are drivers because all tasks have 0 float.

This chart provides information about the schedule critical path, and tasks on the critical path are schedule drivers

This chart provides information about the schedule critical path, but it is not clear from this what tasks are schedule drivers.