Traffic Issues on Little Falls Road

Neighborhood Traffic Calming Team Response to Citizen Request for Traffic Calming

July 11, 2001

Dear Citizen:

This is in response to your previous request for traffic calming measures for Little Falls Road between North Harrison Street and North Lexington Street in the Williamsburg and Rock Spring Civic Association. The Neighborhood Traffic Calming Team of the Arlington Department of Public Works has completed its evaluation regarding speeding concerns.

Based on the information, staff investigated records, conducted field site visits and collected speed data on Little Falls Road. We found the average speeds on Little Falls Road were measured at 29 mph with a traffic volume of 2320 vehicles per day. Further analysis indicated that the 85th percentile speed was measured at 33 mph, meaning that most (85 percent) motorists travel at 33 mph or below, and 15 percent travel at a higher speed. An 85th percentile speed of 33 mph exceeds the 30 mph adopted threshold that defines a speeding problem as outlined in the Neighborhood Traffic Calming Program. Locations meeting traffic calming thresholds are further graded for various factors. Points are given for volume, speed, accidents, bus/bike route, pedestrian generators (i.e. schools, parks, library etc.), and the existence of sidewalks. The points are totaled for a ranking score. All requests are then prioritized based on the total points accumulated. The ranking score for Little Falls Road between North Harrison Street and North Lexington Street is 68. A ranking score of 68 is mid range compared to other locations where we have collected data. We will report these results to the NTCC for prioritization. Once Little Falls Road is selected by the NTCC and staff as a project street to receive traffic calming assistance, you will be notified.

In the meantime, if you would like for us to deploy the Speed Display Trailer, which displays the speeds and alerts drivers of their speeds please call me at (703) 228-3735 to schedule an appointment.

It has been a pleasure to review this matter for you. Should you have any further questions, please call me.

Sincerely,

Susan M. Finotti
Neighborhood Traffic Calming Team

C: Mr. John McCracken, President
Rock Spring Civic Association
Ms. Ellen Jones, President
Williamsburg Civic Association
Lt. Bruce Hackert, ACPD
NTCC

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