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This data layer contains the locations of traffic counts in Massachusetts conducted by the Massachusetts Highway Department either as part of the federally-mandated Highway Performance Monitoring System or as part of its special counts program.
Each year the MPO obtains thousands of ASCII text files containing the collected traffic count information from MHD's automatic traffic recorders. These files are converted into comma-separated files and imported into a database. Then the narrative descriptions of the locations, part of the original data, are used to place points in a semi-automated process. Points are placed for logical, rather than strict locational, accuracy. That is, if the description of a traffic count states that it measured traffic on such and such a street, north of the intersection with some other street, then placement of the point was considered accurate if it occurred on the named street within one hundred feet of the named intersection and with no other intervening intersections. The Massachusetts Highway Department roads data layer (based upon 1:25,000 scale USGS digital line graphs) was used as the base road network. Now that MHD has moved to a data layer based upon 1:5000 orthophotography-derived centerlines, the position of the traffic count points will be gradually modified to remain over the associated roads.
| Item Name | Data Type | Width | Dec. Width | Output | Description |
| FID | OID | 4 | |
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Internal feature number. |
| Shape | Geometry | 0 | |
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Feature geometry. |
| TOWN | String | 25 | |
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Official Commonwealth of Massachusetts town name |
| ROUTE | String | 4 | |
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Primary route number (priority order runs interstate, federal, state) of associated road |
| ALT_ROUTES | String | 20 | |
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Additional route numbers shared by the stretch of associated road |
| STREETNAME | String | 40 | |
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Official streetname of the associated road |
| STAT_STR | String | 40 | |
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Streetname from the narrative description of the traffic count location |
| FAC_TYPE | String | 1 | |
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Type of associated road (See table of enumerated values below.) |
| MHD_DIST | Number | 2 | |
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Massachusetts Highway Department district (See table of enumerated values below.) |
| STATIONNUM | Number | 6 | |
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Unique number identifying traffic count location (assigned by MHD for HPMS counts and by the MPO for special counts) |
| CSN | String | 8 | |
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Combined county code and road serial number of associated road |
| TOWN_ID | Number | 3 | |
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MassGIS town code number |
| RIN | Number | 4 | |
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Road inventory number of associated road |
| CLASS | Number | 2 | |
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Functional classification of associated road (See table of enumerated values below.) |
| STAT_DESC | String | 60 | |
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Additional positioning information from narrative description of traffic count location |
| STATUS | String | 1 | |
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Active or inactive |
| LOCATION | String | 60 | |
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Location information from MHD's published book of traffic volumes |
| TOT_LANES | Number | 2 | |
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Number of total lanes of associated road |
| Y1962 | Number | 6 | |
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Average daily traffic (ADT) for 1962 |
| Y1963 | Number | 6 | |
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ADT for 1963 |
| Y1964 | Number | 6 | |
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| Y1965 | Number | 6 | |
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| Y1966 | Number | 6 | |
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| Y1967 | Number | 6 | |
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| Y1968 | Number | 6 | |
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| Y1969 | Number | 6 | |
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| Y1970 | Number | 6 | |
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| Y1971 | Number | 6 | |
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| Y1972 | Number | 6 | |
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| Y1973 | Number | 6 | |
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| Y1974 | Number | 6 | |
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| Y1975 | Number | 6 | |
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| Y1976 | Number | 6 | |
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| Y1977 | Number | 6 | |
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| Y1978 | Number | 6 | |
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| Y1979 | Number | 6 | |
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| Y1980 | Number | 6 | |
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| Y1981 | Number | 6 | |
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| Y1982 | Number | 6 | |
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| Y1983 | Number | 6 | |
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| Y1984 | Number | 6 | |
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| Y1985 | Number | 6 | |
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| Y1986 | Number | 6 | |
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| Y1987 | Number | 6 | |
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| Y1988 | Number | 6 | |
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| Y1989 | Number | 6 | |
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| Y1990 | Number | 6 | |
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| Y1991 | Number | 6 | |
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| Y1992 | Number | 6 | |
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| Y1993 | Number | 6 | |
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| Y1994 | Number | 6 | |
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| Y1995 | Number | 6 | |
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| Y1996 | Number | 6 | |
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| Y1997 | Number | 6 | |
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| Y1998 | Number | 6 | |
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| Y1999 | Number | 6 | |
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| Y2000 | Number | 6 | |
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| Y2001 | Number | 6 | |
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| Y2002 | Number | 6 | |
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| Y2003 | Number | 6 | |
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| Y2004 | Number | 6 | |
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| Y2005 | Number | 6 | |
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| Y2006 | Number | 6 | |
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ADT for 2006 |
| Value | Meaning |
| 0 | Mainline roadway |
| 1 | Simple Ramp |
| 2 | Uni-directional compound ramp |
| 3 | Simple Ramp - carries NB or EB route |
| 4 | Simple Ramp - carries SB or WB route |
| 5 | Bi-directional compound ramp |
| 6 | Terminal Ramp - end of NB or EB route |
| 7 | Terminal Ramp - end of SB or WB route |
| 8 | Rotary |
| 9 | Collector-Distributor |
| I | Interstate Highway |
| U | US Route |
| S | State Route |
| L | Local Road |
| R | Any Ramp |
| Value | Meaning |
| 1 | Berkshire region |
| 2 | Hampden-Hampshire-Franklin region |
| 3 | Worcester region |
| 4 | Northeastern region |
| 5 | Southeastern region |
| Value | Meaning |
| 0 | Local |
| 1 | Interstate |
| 2 | Rural principal arterial and Urban extensions |
| 3 | Rural minor arterial and Urban extensions |
| 4 | Other Urban principal arterial |
| 5 | Urban minor arterial or Rural major collector |
| 6 | Urban collector or Rural minor collector |
| Data Manager: | Marc Desmarais Manager, Data Resources Central Transportation Planning Staff 10 Park Plaza, Suite 2150 Boston, MA 02116 United States Tel. (617) 973-7077 marc.desmarais@ctps.org |
| Status: |
Special count locations still being geocoded for years prior to 1997 |
| Update frequency: |
Yearly in spring |
| Additional information: |
In some cases there may be a backlog of received electronic tabular data files that have not yet been geocoded. These files are available for public use as well. |
| Contributing source: |
ASCII text files and Excel spreadsheets from MHD Type--Electronic (CD-ROM and Internet download) |
| Process step: | |
| Feature Class Name | Type | No. of Features | Spatial Index? | Topology? |
| stations | Point | 10464 | TRUE | FALSE |
Grid Coordinate System:State Plane Coordinate System, FIPS Zone 2001
Horizontal Datum Name:North American Datum of 1983
Ellipsoid Name:Geodetic Reference System 80