| Flap 1 | Flap 2 |
| ADT | Average Daily Traffic |
| ADDT | Annual Dailiy Traffic |
| VMT | Vehicle miles Traveled |
| Principal Arterials | serve longer trips, carry the highest traffic volumes, carry a large percentage of the VMT on minimum mileage,
and provide minimal land access |
| Minor Arterials | interconnect the principal arterials, provide less mobility,
smaller geographic areas than principal arterials |
| Collectors | provide both land access and traffic circulation with residential, commercial, and industrial areas by collecting
and distributing traffic to these areas |
| Local Streets | provide direct access to adjacent land and to the higher classified streets |
| Orgin Destination Study | a detailed survey to estimate travel demands on a traffic system |
| Peek Hour/period | the highest volume of traffic in a day
- usually 4:30 - 5:30 PM |
| Level of Service | the ability of a road or street to accommodate traffic flow determines the level of service provided. Free flowing
or delayed flow determines a high level of service whereas, high traffic volumes, too many access points, and
poor signal timing causes lo |
| single-family residential | 10 Vehicle Trips per Unit |
| planned unit developments | 8 Vehicle Trips per Unit |
| duplexes and townhouses | 7 Vehicle Trips per Unit |
| apartments & condos | 6 Vehicle Trips per Unit |
| mobile homes | 5.5 Vehicle Trips per Unit |
| retirement homes | 3.5 Vehicle Trips per Unit |
| shopping center | Range of parking: 1:1000 to 5:1000 (spaces:Gross Leasable Area) |
| office | Range of Parking: 1:2000 to 3:1000 (spaces:Gross Leasable Area) |
| general office | 1:300 (spaces:gross floor area) |
| office & medical center | Range of Parking: 1:10 to 3:4 (spaces:employees) |
| medical center | Range of Parking: 3:4 to 9:2 (spaces:beds) |
| university/college | Range of Parking: 1:10 to 1:2 (spaces:students) |
| university/college | Range of Parking: 4:5 (spaces:staff persons) |
| hotel | Range of Parking needed: 1:5 to 3:2 (spaces:rooms) |
| restaurant | Range of Parking Needed: 5:1000 to 25:1000 (spaces:Gross Leasable Area) |
| resident | Range of Parking Needed: 1:5 to 2:1 (spaces:units) |
