| 1924 |
11.6% Test Hill Access
Oval Test Track |
| 1926 |
N-S Straightaway
E-W Straightaway
GM Road |
| 1929 |
11.6% Test Hill
24% Downhill
Barnes Circle Access
Belgian Block Loop
DuPont Circle Return
Hill Route (DuPont Circle to S. Circle) |
| 1930 |
Durability 11.6% Hill |
| 1937 |
27% Test Hill |
| 1939 |
Holden Test Area Ride Road |
| 1949 |
Seven Sisters |
| 1950 |
Noise Road |
| 1951 |
Military Straightaway |
| 1953 |
Pavement Joint Road
Pontiac Trail
Rough Track
GM Road relocation |
| 1954 |
16% Test Hill
7.2% Test Hill Loop
Barnes Circle & Track Overpass
Pickett Lake Road
Power Valley Road |
| 1955 |
N-S Straightaway extension
South Loop Access
Truck Test Loop |
| 1956 |
DuPont Circle |
| 1958 |
R & H Loop |
| 1960 |
Hyne Road |
| 1963 |
Circular Test Track, Track Access and Overpass |
| 1964 |
Salt Splash Road
Twelve Mile Road |
| 1966 |
East Bamber Road
Vehicle Evasive Performance Road |
| 1968 |
Ice Surface Facility
Natural Ice Facility
Noise Passby Facility on East Bamber Road
Vehicle Dynamics Test Area |
| 1969 |
Salt Spray Facility |
| 1973 |
GM Road relocation |
| 1979 |
Interior Noise Road |
| 1981 |
East Circle |
| 1984 |
City Course
Twist Ditch Course |
| 1985 |
23% Test Hill
RTP Facility |
| 1986 |
Anti-Lock Brake Test Gravel Road |
| 1993 |
Water Intrusion Facility |
| 1994 |
Pothole Facility
Truck Test Facility |
| 1994-95 |
Antenna Test Site and Facility |
| 1995 |
M-15 Road (former German Block Road) |
