Atlas Portal

Record Series Title

Retention Schedule[Full Path]

Information Type

Keyword of [FullPath Or Essential Record Or Title Or Description Or Comments Or Code Or Record Type]

Record Series Code

Record Series Title

Minimum Retention

Disposition

DESCRIPTION

Agency Specific Schedules: Transportation, Department of: Traffic Data Analysis/Classification

DOT-01-001

Average Daily Traffic (ADT) Maps (Corporate Master)

Permanent

Maps showing point specific monitored locations and average daily traffic (ADT) count for that location for the monitoring cycle. Maps are stored in hard copy format. Most recent maps also available on agency website. Files are arranged by cycle year then by town.

DOT-01-002

Expressway Maps (Corporate Master)

Permanent

Limited Access Highway maps showing mainline and ramp average daily traffic (ADT) volumes for each location for the monitoring cycle. Includes both federal and state highways. Map may or may not be to scale. Arranged by cycle year then by route number.

DOT-01-003

Traffic Studies - Special Counts (Corporate Master)

Issue date + 12 Year(s)

Consists of reports compiled for any federal, state, and/or local municipality. The reports may include hourly and/or average daily traffic (ADT) volumes, vehicle classification, speed, weight and turning movement data, functional classification information, location mileage point and description. Traffic studies are conducted on a request and availability basis. Files are arranged by year and type of study then by town or expressway.

DOT-01-004

Traffic Count Data - Counting Program (Corporate Master)

15 Year(s)

Consists of traffic data collected using portable counting units or permanent counting unit/stations, such as Automated Traffic Recorders (ATRs), Continuous Counting Stations (CCS), and Weigh-In-Motion (WIM) Stations. Type of data collected includes hourly volumes, vehicle classification, speed, truck weight, and turning movement data. Most data collected on a three year cycle for each federal, state, and/or local road; ATR/CCS data collected annually. Files are arranged by type of count, then by year, then by town and/or station number. Older records are stored on paper data cards; newer records are stored using both hard copy format and electronic format.