Comment and Information for 2004 Durham Counts:

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General Notes for All Stations:
  1. All automatic count stations have been counted with FHWA 13-class vehicle classification and grouped into the cordon count categories. Under this classification scheme, based on vehicle length, the light truck category is overestimated compared to manual count stations because personal trucks cannot be separated out from commercial trucks. Buses are also overestimated compared to manual count stations because they cannot be totally separated out from some larger medium trucks or smaller heavy trucks.
  2. For automatic count stations, passenger vehicle counts are proportioned into automobile occupancy categories. Using a sample of manual count stations with relatively low traffic volumes, the proportions were derived from the average percentage share of automobiles for the A.M. and P.M. peak hours (equal to 0.81, 0.16, 0.02, and 0.01 for Auto1, Auto2, Auto3 and Auto4, respectively).
  3. For automatic count stations, all buses are considered to be school buses, and occupancies are based on the average occupancies recorded at a sample of manual counted stations with relatively low traffic volumes.
  4. Database has been modified to reflect traffic volume in 15-minute ending times.
  5. Cab drivers, truck drivers and bus drivers are NOT included in person counts.
  6. 2004 counts were conducted from 6:00 to 19:30 (i.e., 6:00 A.M. to 7:30 P.M.).

 

Specific Notes by Station Number:
StationComments
11.03 Traffic estimate has been replaced with 2006 automatic count to reflect a more realistic estimate.
11.05 Traffic estimate has been replaced with 2006 automatic count to reflect a more realistic estimate.
13.01 Traffic estimates based on 2004 automatic counts on roads with similar land uses and volumes.
39.07 Traffic direction was updated to accurately depict the direction of the screenline.
53.24 There are approximately 7 dwelling units on this street, which has 3 accesses to major roads (via 2 perpendicular streets which intersect Highway 7, and Mill Street which intersects Simcoe Street). Traffic estimate based on at least one dwelling unit which primarily uses Brock Street for external travel.
53.25 There are approximately 13 dwelling units on this street, which has 3 accesses to major roads (via 2 perpendicular streets which intersect Highway 7, and Mill Street which intersects Simcoe Street). Traffic estimate based on approximately 4 of the dwelling units which primarily use Mill Street for external travel.
58.02 Poorly maintained road which compromises a "T" intersection with Cold Springs Camp Road.


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