Traffic Signals and Roadways
Page Content Portlet
Traffic Signals and Roadways
Traffic Management Division
Traffic Management Division ensures a safe and efficient transportation system by maintaining the countywide traffic signal system, monitors existing travel conditions, maintains traffic volume and traffic accident data bases, and provides analyses, reports, and recommendations for corrective measures. The division is also responsible for developing and managing the streetlight and speed hump programs. The division maintains 750 signals, over 463 flashers, 248 miles of fiber optic communications cable, and 350 CCTV cameras. The division also oversees the operation of the Traffic Control Center.
Roadway Operations and Maintenance Division
Roadway Operations and Maintenance Division is responsible for maintaining existing County roads, sidewalks, bridges, and surface vegetation within the right of way. In addition, the division reconstructs existing roads and builds miscellaneous road projects. The division also coordinates, tests and oversees several million dollars' worth of annual contracted work. The division is also responsible for promoting safe traffic conditions in the County by installing and maintaining traffic control signing, pavement markings, and coordinating road closures; reviewing new developments for traffic impact, and proposing traffic plans to alleviate congestion and dangerous traffic situations.
For more information, please contact:
Traffic Counts Report 2023
Traffic Engineering Division
Traffic Counts Report 2022
Published by March 1, 2023
This report is an alphabetical listing of permanent count stations that are repeatedly counted on an annual basis, using electronic equipment. The Gwinnett County Department of Transportation has included all available traffic counts for the last five years from 2018 to 2022.
If a particular count location or year is missing, please call us at 770.822.7400, and we will attempt to include it in our next year’s update by March 1, 2024. Please visit our website then for new traffic count information.
All road names starting with B (PDF Format)
All road names starting with C (PDF Format)
All road names starting with D (PDF Format)
All road names starting with E (PDF Format)
All road names starting with F (PDF Format)
All road names starting with G (PDF Format)
All road names starting with H (PDF Format)
All road names starting with I (PDF Format)
All road names starting with J (PDF Format)
All road names starting with K (PDF Format)
All road names starting with L (PDF Format)
All road names starting with M (PDF Format)
All road names starting with N (PDF Format)
All road names starting with O (PDF Format)
All road names starting with P (PDF Format)
All road names starting with R (PDF Format)
All road names starting with S (PDF Format)
All road names starting with T (PDF Format)
All road names starting with V-Z (PDF Format)
The ROAD ON lists the road where the count station is located.
The "BETWEEN" & "AND" columns list the two cross streets intersecting the main road between which the count station is located.
The AGENCY designates the agency or entity that collected the data: Private Contractor (P) retained by Gwinnett County Department of Transportation for the purpose.
The DATE COUNTED shows the actual day on which the traffic counting started. Traffic counts are conducted for a 24-hour period.
The DAY OF WEEK represents the actual day of the week on which traffic counting started.
The EQUIPMENT represents the equipment used to collect data: Tube counter (T).
The NBEB VOL represents the actual, unadjusted northbound or eastbound traffic volume count.
The SBWB VOL represents the actual, unadjusted southbound or westbound traffic volume count.
The PEAK HOUR 'RAW' VOL lists the highest total number of vehicles counted during any one-hour period during the 24-hour collection time.
The EST. PEAK HR VOL contains the estimated average peak hour traffic count for a given count station. It is calculated by applying the adjustment factors according to the methodology used for calculating EST. ADT (explained below).
The D-FACTOR is the directional factor measured in percent. It is the percent of the peak hour volume that occurs in the direction of the higher volume traffic flow during the peak hour. For example, if the peak hour total (figure for the entire road) is 1,000 vehicles and the northbound flow of vehicles during that peak hour is 600, then the D Factor for that section of roadway would be 60%, found by dividing 600 by 1,000.
The TOTAL 'RAW' VOLUME represents the actual, unadjusted 24-hour traffic volume counted on a given section of the road.
The EST. ADT contains the average daily traffic (ADT) count for that station number found by applying the adjustment factors explained below. To find EST. ADT for a particular count, the unadjusted amount in the "Total 'Raw' Volume" column is multiplied first by the adjustment factor for the month in which the count began. Then, the result is multiplied by the adjustment factor for the day of the week on which the count began.
Monthly Adjustment Factors
Daily Adjustment Factors