cambridgema-gov/average-daily-traffic-counts-1972-to-2017-v43b-kqeq
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Average Daily Traffic Counts 1972 to 2017

This dataset contains the Average Daily Traffic counts and AM and PM peak hour Traffic counts measured on various road segments in the City of Cambridge from 1972 to 2017. The counts in this data set reflect only vehicle counts. An Average Daily Count measures the number of vehicles for an entire day, or an average of several days. Automatic Traffic Recorders (ATRs) log every vehicle that passes in each direction and this data is used to calculate Average Daily Traffic volumes and AM and PM Peak Hour Traffic Volumes for the street. The Peak Hour is average highest number of vehicles recorded during the morning and evening peak hour. Not all streets have the same peak hour. For example, the peak hour for one street could be 5 pm to 6 pm, whereas a peak hour for another street could be from 5:15 pm to 6:15 pm. The peak hour for a street can also change from day to day. When counts are done for several days, the Peak Hour count is the average of the highest peak hour over those days.

Automatic Traffic Recorders (ATR’s) are rubber hoses temporarily affixed to the street. When a vehicle passes, a pulse of air passes through the hose and triggers an air switch in a recording device on the roadside. The recorder device is a small steel box powered by a battery. Air switch triggers are stored on board and later downloaded to a computer. Note: Traditional and older ATRs were not able to record bicycles, however, more recent ATR’s (past 5 to 10 years) have been able to record bicycles that pass over the recorder.

Columns

NameSocrata field nameColumn name in sgr mountData typeDescription
cambridge_zipcodes:@computed_region_rcj3_ccgu:@computed_region_rcj3_ccguNumber
Location (state)location_statelocation_stateText
Location (address)location_addresslocation_addressText
PM Peak 2016pm_peak_2016pm_peak_2016Number
PM Peak 2015pm_peak_2015pm_peak_2015Number
PMPeak2013pmpeak2013pmpeak2013Number
PMPeak2012pmpeak2012pmpeak2012Number
PMPeak2009pmpeak2009pmpeak2009Number
PMPeak2003pmpeak2003pmpeak2003Number
PMPeak2001pmpeak2001pmpeak2001Number
PMPeak1998pmpeak1998pmpeak1998Number
PMPeak1994pmpeak1994pmpeak1994Number
AM Peak 2016am_peak_2016am_peak_2016Number
AMPeak2014ampeak2014ampeak2014Number
AMPeak2013ampeak2013ampeak2013Number
AMPeak2012ampeak2012ampeak2012Number
AMPeak2010ampeak2010ampeak2010Number
AMPeak2009ampeak2009ampeak2009Number
AMPeak2004ampeak2004ampeak2004Number
AMPeak2001ampeak2001ampeak2001Number
AMPeak2000ampeak2000ampeak2000Number
AMPeak1999ampeak1999ampeak1999Number
AMPeak1998ampeak1998ampeak1998Number
AMPeak1994ampeak1994ampeak1994Number
AMPeak1989ampeak1989ampeak1989Number
2016_2016_2016Number
2011_2011_2011Number
2010_2010_2010Number
2008_2008_2008Number
2006_2006_2006Number
2003_2003_2003Number
2002_2002_2002Number
2001_2001_2001Number
2000_2000_2000Number
1998_1998_1998Number
1997_1997_1997Number
1996_1996_1996Number
1995_1995_1995Number
1994_1994_1994Number
SourcesourcesourceTextThe contractor who conducted the traffic count
LocationlocationlocationPointThe latitude and longitude of the traffic count
PrimaryStreetprimarystreetprimarystreetTextThe street on which measurement took place
IDididNumberIdentification number associated with each record
Classification Countsclassification_countsclassification_countsText
PM Peak 2017pm_peak_2017pm_peak_2017Number
PMPeak2014pmpeak2014pmpeak2014Number
PMPeak2011pmpeak2011pmpeak2011Number
PMPeak2010pmpeak2010pmpeak2010Number
PMPeak2007pmpeak2007pmpeak2007Number
PMPeak2004pmpeak2004pmpeak2004Number
PMPeak2002pmpeak2002pmpeak2002Number
PMPeak1995pmpeak1995pmpeak1995Number
PMPeak1989pmpeak1989pmpeak1989Number
PMPeak1987pmpeak1987pmpeak1987Number
PMPeak1981pmpeak1981pmpeak1981Number
AM Peak 2017am_peak_2017am_peak_2017Number
AMPeak2011ampeak2011ampeak2011Number
AMPeak2007ampeak2007ampeak2007Number
AMPeak2006ampeak2006ampeak2006Number
AMPeak2005ampeak2005ampeak2005Number
AMPeak2002ampeak2002ampeak2002Number
AMPeak1997ampeak1997ampeak1997Number
AMPeak1996ampeak1996ampeak1996Number
AMPeak1987ampeak1987ampeak1987Number
AMPeak1981ampeak1981ampeak1981Number
2014_2014_2014Number
2013_2013_2013Number
2012_2012_2012Number
2009_2009_2009Number
2007_2007_2007Number
2005_2005_2005Number
2004_2004_2004Number
1999_1999_1999Number
1989_1989_1989Number
1987_1987_1987Number
1981_1981_1981Number
1972_1972_1972Number
LatitudelatitudelatitudeNumberLatitude for traffic count
Location (city)location_citylocation_cityText
cambridge_cdd_zoning:@computed_region_swkg_bavi:@computed_region_swkg_baviNumber
cambridge_neighborhoods:@computed_region_rffn_qbt6:@computed_region_rffn_qbt6Number
PMPeak1997pmpeak1997pmpeak1997Number
LongitudelongitudelongitudeNumberThe longitude for the traffic study
2015_2015_2015Number
AMPeak1972ampeak1972ampeak1972Number
AMPeak2008ampeak2008ampeak2008Number
PMPeak2008pmpeak2008pmpeak2008Number
PMPeak2005pmpeak2005pmpeak2005Number
PMPeak1999pmpeak1999pmpeak1999Number
PMPeak1996pmpeak1996pmpeak1996Number
AM Peak 2015am_peak_2015am_peak_2015Number
AMPeak2003ampeak2003ampeak2003Number
PMPeak2000pmpeak2000pmpeak2000Number
2017_2017_2017Number
PMPeak2006pmpeak2006pmpeak2006Number
PMPeak1972pmpeak1972pmpeak1972Number
AMPeak1995ampeak1995ampeak1995Number
Location (zip)location_ziplocation_zipText
Police Response Districts:@computed_region_v7jj_366k:@computed_region_v7jj_366kNumber
Police Neighborhood Regions:@computed_region_guic_hr4a:@computed_region_guic_hr4aNumber
 
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