| Classification | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | Total | ||
| 1 | Forensic Engineering (Expert Witness) | 1 | 4 | 2 | 4 | 4 | 1 | 3 | 19 | |
| 2 | New Installation (New Signals) | 3 | 5 | 6 | 10 | 6 | 0 | 1 | 31 | |
| 3 | Operations Improvements | 9 | 4 | 7 | 3 | 10 | 12 | 9 | 54 | |
| 4 | Roadway Design Analysis | 3 | 5 | 1 | 1 | 11 | 2 | 8 | 31 | |
| 5 | Schools - Traffic Studies | 0 | 1 | 0 | 0 | 1 | 4 | 3 | 9 | |
| 6 | Street Area Lighting | 1 | 2 | 0 | 2 | 1 | 1 | 0 | 7 | |
| 7 | TIA's | 19 | 15 | 9 | 8 | 5 | 10 | 11 | 77 | |
| 8 | Traffic Studies | 4 | 3 | 16 | 20 | 14 | 17 | 20 | 94 | |
| 9 | Warrants Studies | 3 | 2 | 0 | 1 | 1 | 1 | 3 | 11 | |
| 10 | Traffic Signal Base Design | 15 | 6 | 12 | 8 | 5 | 9 | 2 | 57 | |
| 11 | Traffic Counts | 18 | 9 | 15 | 14 | 9 | 14 | 12 | 91 | |
| 12 | TIA/Other Review | 0 | 0 | 0 | 0 | 2 | 6 | 5 | 13 | |
| 13 | Permitting/Construction Services | 0 | 0 | 0 | 0 | 2 | 3 | 1 | 6 | |