This layer contains the Parking Tickets issued since January 2014 and contains tickets that were issued by both the PCO's, the Parking Control Officers, and the Cambridge Police. It does not contain Ticket Numbers or Officer Badge Numbers at the instruction of management. Nor does it contain any vehicle data or plate numbers which could inadvertently compromise private data.

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.

This file is the output of the permanent traffic count station at the intersection of Hampshire Street at Portland Street. The station counts all bikes in the bike lanes and all vehicles leaving the intersection in each direction on Hampshire Street.

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.

This dataset contains a list of both Residential Parking Permits and Visitor Parking Permits. The Traffic, Parking and Transportation Department’s Permit Year spans from November 1st through October 31st of the following year. The Parking Permit renewal period spans from November 1st through January 31st of the following year. This dataset will be updated semi-annually at the end of the Permit Year, and at the end of the Parking Permit renewal period, to provide users with updated information from before and after permit renewals occur. This dataset currently includes permit data for the entirety of 2017 and through January 31 of the 2018 permit year.

The dataset identifies the Census Block that each parking permit is located in.

The first person that applies for a Resident Parking Permit will automatically receive that household’s single Visitor Parking Permit with their Resident Permit. For households without a vehicle or those who only require a Visitor Parking Permit, the associated fee is $25.00, except for Senior Residents (age 65 or older) or persons with disabilities.

The Account Number field is associated with the first resident in a household who applied for either a Resident Parking Permit or a Visitor Parking Permit. If the resident applied for a Resident Parking Permit they should have an associated Visitor Parking Permit with the same Account Number.

Each permit is characterized by a permit type. The permit types in this dataset include:

A1: Standard Cambridge residential parking permit.
A2: Replacement residential permit.
A3: Senior resident permit.
G1: Visitor permit, no resident permit.
G2: Visitor permit with Resident Permit.
G3: Senior Visitor Permit Only.

A Senior Resident could have both an A3 and G3 permit, or just a G3 permit.

Resident Parking Permits allow Cambridge residents to park their vehicles, including motorcycles, in locations throughout the City posted "Parking by Permit Only". The purpose of the City's Resident Parking regulation is to maximize the availability of parking for Cambridge residents while discouraging long-term parking on residential streets near commercially zoned areas or transportation access points.

Visitor Parking Permits are provided to Cambridge residents for use by their guests to park near the residents’ homes. When placed on the dashboard, it may be used for up to three consecutive days in locations signed as “Parking by Permit Only” in the geographic area shown on the map on the back of the visitor permits or here on the Traffic and Parking Department’s website. http://www.cambridgema.gov/traffic/Permits/visitorparkingpermits/visitorparkingmap

This polygon layer contains metered street parking spaces in the City of Cambridge. Created for use with online permitting for street obstructions (moving vans, dumpsters, etc.) and for the Traffic and Parking Department for parking meter inventory.

For more information and download links see:
http://www.cambridgema.gov/gis/gisdatadictionary/traffic/traffic_meteredparkingspaces.aspx

This layer contains point features of all Commercial parking lots in the City of Cambridge. These include private and municipal lots and garages and their addresses. Created for general use by City staff. Used for both mapping and specific identification of parking lot locations.

For more information and download links see:
http://www.cambridgema.gov/gis/gisdatadictionary/traffic/traffic_commercialparking.aspx

The Traffic, Parking &Transportation department has conducted over 600 speed studies since 1987. Some locations have been studied more than once. The speed of each passing vehicle is recorded by radar for an hour each in the morning rush hour, evening rush hour, and midday. From these results, we find the 85th percentile speed for each one-hour period. The 85th percentile speed describes a speed that 85% of drivers are traveling slower than (and 15% of people are driving faster than). Traffic engineers use 85th percentile speed for most traffic safety analyses and design standards. In this dataset, the speed reported is the highest 85th percentile speed for all three one-hour periods studied.

This interactive data explorer is built on the Resident and Visitor Parking Permits dataset. That dataset contains a list of both Residential Parking Permits and Visitor Parking Permits. The Traffic, Parking and Transportation Department’s Permit Year spans from November 1st through October 31st of the following year. The Parking Permit renewal period spans from November 1st through January 31st of the following year. This dataset will be updated semi-annually at the end of the Permit Year, and at the end of the Parking Permit renewal period, to provide users with updated information from before and after permit renewals occur. The dataset identifies the Census Block that each parking permit is located in. Please view the dataset or visit the Traffic, Parking and Transportation Department website to learn more.

This layer contains point features of all municipal parking lots in the City of Cambridge. Created for general use by City staff. Used for both mapping and specific identification of parking lot locations.

For more information and download links see:
http://www.cambridgema.gov/gis/gisdatadictionary/traffic/traffic_municipalparkinglots.aspx