| A | Amendment | M | Marked Up | |
| E | Engrossment | $ | Fiscal Note | |
| HJ | House Journal | SJ | Senate Journal |
| Date | Day | Committee | |
|---|---|---|---|
| 01/16/2015 | 9 | Senate Transportation | |
| 01/22/2015 | 13 | Senate Transportation | |
| 03/12/2015 | 45 | House Transportation | |
| 03/13/2015 | 46 | House Transportation | |
| 03/19/2015 | 50 | House Transportation | |
| 03/26/2015 | 55 | House Transportation | |
| 03/27/2015 | 56 | House Transportation | |
| 04/09/2015 | 64 | Conference Committee | |
| 04/20/2015 | 71 | Conference Committee | |
| 04/22/2015 | 73 | Conference Committee |