Top 15 transit engineering firms
| TOP 15 TRANSIT ENGINEERING FIRMS | ||
| RANK | COMPANY | 2016 TRANSIT REVENUE | 
| 1 | AECOM | $64,100,000 | 
| 2 | STV | $47,475,229 | 
| 3 | Arup | $22,159,669 | 
| 4 | Morrison Hershfield | $15,969,624 | 
| 5 | Ross & Baruzzini | $7,063,000 | 
| 6 | Thornton Tomasetti | $6,686,659 | 
| 7 | Walker Parking Consultants | $4,114,867 | 
| 8 | Jensen Hughes | $3,146,612 | 
| 9 | Wiss, Janney, Elstner | $2,000,000 | 
| 10 | TLC Engineering for Architecture | $1,453,268 | 
| 11 | Guernsey | $1,103,798 | 
| 12 | LaBella Associates | $1,083,103 | 
| 13 | Martin/Martin | $1,059,565 | 
| 14 | Coffman Engineers | $994,491 | 
| 15 | Simpson Gumpertz & Heger | $900,000 | 
