| A | Amendment | M | Marked Up | |
| E | Engrossment | $ | Fiscal Note | |
| HJ | House Journal | SJ | Senate Journal |
| Date | Day | Committee | |
|---|---|---|---|
| 01/29/2015 | 18 | Senate Transportation | |
| 02/06/2015 | 24 | Senate Transportation | |
| 03/12/2015 | 45 | House Transportation | |
| 03/19/2015 | 50 | House Transportation | |
| 03/19/2015 | 50 | House Transportation | |
| 03/20/2015 | 51 | House Transportation | |
| 04/06/2015 | 61 | Conference Committee | |
| 04/14/2015 | 67 | Conference Committee |