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.

All vehicles towed within the City of Cambridge reported to the Cambridge Emergency Communications Department. Includes both vehicles towed by the city (for snow emergencies, street cleaning, parking violations, etc.) and private tows (from business parking lots, etc.)

List of crashes involving a motorist(s) reported to the City of Cambridge. The log also lists crashes involving a motorist(s) and a bicyclist(s) and/or a pedestrian(s). Any data or text that may identify specific persons or companies has been omitted. Data are updated most days. A more detailed dataset, updated quarterly, can be found here: https://data.cambridgema.gov/Public-Safety/Police-Department-Crash-Data-Updated/gb5w-yva3

Entries involving no motorists, bicyclists or pedestrians are most commonly hit and run crashes involving unoccupied vehicle(s).

OBSOLETE - to be deleted September 2024

***This dataset has been deprecated. Cambridge is now maintaining a single Tow Log open dataset. Please refer to that dataset for from 2015 and all other years for which open tow data exists.

All vehicles towed within the City of Cambridge reported to the Cambridge Emergency Communications Department. Includes both vehicles towed by the city (for snow emergencies, street cleaning, parking violations, etc.) and private tows (from business parking lots, etc.)

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

List of crashes involving motor vehicles, bicycles and/or pedestrians reported in the City of Cambridge since 2015.

Any data or text that may identify specific persons or companies has been omitted. Please see attached MassTRAC documentation for additional explanation about crash reporting data elements.

Note: crashes involving pedestrians are indicated in the “P1 Non Motorist Desc” and “P2 Mon Motorist Desc” columns. When using Socrata's built in visualization tools to map crashes, please use the geocoded "Location" column. The column "May involve cyclist" specifies whether a given incident may involve a bicycle operator.

This dataset lists curbside, designated handicapped parking spaces located in commercial areas.

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.

View full metadata
https://www.cambridgema.gov/GIS/gisdatadictionary/Traffic/TRAFFIC_MeteredParkingSpaces

Description
This polygon layer contains metered street parking spaces in the City of Cambridge.

About Edit Dates
This data is automatically updated on a set schedule. The Socrata edit date may not reflect the actual edit dates in the data. For more details please see the update date on the full metadata page or view the edit date within the data rows.