| A | Amendment | M | Marked Up | |
| E | Engrossment | $ | Fiscal Note | |
| HJ | House Journal | SJ | Senate Journal |
| Date | Day | Committee | |
|---|---|---|---|
| 01/06/2011 | 3 | Senate Transportation | |
| 01/07/2011 | 4 | Senate Transportation | |
| 03/17/2011 | 48 | House Transportation | |
| 03/17/2011 | 48 | House Transportation | |
| 03/18/2011 | 49 | House Transportation | |
| 04/07/2011 | 63 | Conference Committee | |
| 04/12/2011 | 66 | Conference Committee | |
| 04/14/2011 | 68 | Conference Committee | |
| 04/18/2011 | 70 | Conference Committee |