VDoT Bristol
From an old VDoT "mobile unit directory" book I have:
1100-1199 Bristol District
1200-1299 Abingdon Residency
1210- Chilhowie
1220- Broadford
1230- Sugar Grove
1240- Marion
1250- Benhams
1260- Abingdon
1270- Abingdon
1280- Glade Spring
1300-1399 Jonesville Residency
1310- Ewing
1320- Jonesville
1330- Jonesville
1340- Dryden
1350- Pattonsville
1360- Ft Blackmore
1370- Nickelsville
1380- Gate City
1400-1499 Lebanon Residency
1410- Big Rock
1420- Oakwood
1430- Deskins
1440- Blackford
1450- Lebanon
1460- Castlewood
1500-1599 Tazewell Residency
1510- Bland
1520- Rocky Gap
1530- Tazewell
1540- Claypool Hill
1550- Tazewell
1590- Big Walker Mtn Tunnel
1600-1699 Wise Residency
1610- Fremont
1620- Fremont
1630- Fremont
1640- East Stone Gap
1650- Glamorgan
1660- Coeburn
1700-1799 Wytheville Residency
1710- Independence
1720- Elk Creek
1730- Baywood
1740- Volney
1750- Speedwell
1760- Wytheville
1770- Fort Chiswell
Again, this was printed in in the 90's, and there have probably been some changes, but it should give you an idea of how their radio unit desiginators are layed out. Each area lot has a maintenance superintendent his number is the xxx0, his foreman was the xxx1, and on down the line. Some area headquarters or lots also used the ED number I was talking about in my previous post. Best way to figure these out is if you hear the area lot, say "Baywood to 1730" or any number from 1730 to 1739, its a pretty good chance these are their desiginations. If its another unit desigination, they changed numbers. The Martinsville Residency use to change every time I got use to them. The residency office personnel are from xx00 thru xx09. The resident engineer is xx00, assistant RE xx01, project engineers xx03, residency maintenance supervisors xx05, mechanics, sign shop foremen, etc take up the xx06 and xx07 numbers, and the permit inspector is usually xx09. Again, this is an old list and somethings could have changed, but this was accurate a few years ago.
Hope this helped,