| Variable | DESCRIPTION | Type | Begin Column | End Column |
|---|---|---|---|---|
| STID | FIPS state code | I2 | 1 | 2 |
| CYID | FIPS county code | I3 | 3 | 5 |
| AREATYPE | urban vs. rural classification | I1 | 6 | 6 |
| FACTYPE | facility type ID | I4 | 7 | 10 |
| LINKID | link identifier | I10 | 11 | 20 |
| HOUR | end hour of data (1-24 where 1 = 00-01) | I2 | 21 | 22 |
| VMIX01 | vehicle mix for ldgv (fraction) | F5.3 | 23 | 27 |
| VMIX02 | vehicle mix for ldgt1 (fraction) | F5.3 | 28 | 32 |
| VMIX03 | vehicle mix for ldgt2 (fraction) | F5.3 | 33 | 37 |
| VMIX04 | vehicle mix for hdgv (fraction) | F5.3 | 38 | 42 |
| VMIX05 | vehicle mix for lldv (fraction) | F5.3 | 43 | 47 |
| VMIX06 | vehicle mix for lddt (fraction) | F5.3 | 48 | 52 |
| VMIX07 | vehicle mix for hddv (fraction) | F5.3 | 53 | 57 |
| VMIX08 | vehicle mix for mc (fraction) | F5.3 | 58 | 62 |