Proposed Traffic Calming Plan for Lafayette Village Drive

Community Informational MeetingMason District Governmental Center, 6507 Columbia Pike in Annandale

June 23, 2010, 7 p.m.

Overview of FCDOT Residential Traffic Administration Program (RTAP)

• Community-driven process • Lead by community task force under overall

direction by FCDOT• Must be local or collector road with 25 mph

speed limit to qualify• Traffic calming measures based on standard

traffic engineering principles, public safety, and financial viability

Primary Steps in RTAP Process

• Step 1: Study Initiation – Request for initial engineering review and traffic study

• Step 2: Formal traffic count and speed study• Step 3: Development of conceptual plan• Step 4: Community meeting• Step 5: Community vote• Step 6: Fairfax County Board of Supervisors

endorses proposed traffic calming plan

Community Vote• Ballot area includes all townhouse

homeowners who must use Lafayette Village Drive to access their homes

• Vote conducted by ballot (1 vote per house)• Minimum of 50 percent of residences in ballot

area must cast and return ballot for vote to be valid

• 60 percent of ballots cast must vote yes for proposed plan to be approved

Lafayette Village DriveBallot Area

(295 homes)

Why we initiated a traffic Calming Plan

• Three significant traffic accidents on Lafayette Village Drive in the past eighteen months.

• Speed and driver inattention were factors in all three accidents

Lafayette Village Drive Traffic StudyNB VOLUME 564

SB VOLUME442

NB AVERAGE SPEED28

SB AVERAGE SPEED31

NB 85TH PERCENTILE SPEED36

SB 85TH PERCENTILE SPEED45

Date of Traffic Count: May 13,2009

Qualifications for acceptance into traffic calming program:• Avg. speed of 30 mph OR 85th percentile speed of 35 mph• Volume between 600 and 4,000 vehicles per day

Proposed Lafayette Village

Drive Traffic Calming Plan

• Three-way at Trammell Road and Lafayette Village Drive• Speed Table between Byrds Nest Pass and Butterfield Lane (closer to BNP)• Raised crosswalk at existing painted crosswalk; and• Raised Median Island (8 ft. x 30 ft. with 100 ft. taper) below Hancock Forest Trail

Speed Table/Raised Crosswalk

Raised Median Island

Outcome of Installed Traffic Calming Measures on Tuckaway Drive

Prior to Installation

Post - Installation

% Reduction

NB VOLUME 1179 1039 12%

SB VOLUME1298 632 51%

NB AVERAGE SPEED 31 19 39%

SB AVERAGE SPEED 30 22 27%

NB 85TH PERCENTILE SPEED 36 25 31%

SB 85TH PERCENTILE SPEED 35 30 14%

Thank you for attending the Community Informational Meeting to Consider the Proposed

Traffic Calming Plan for Lafayette Village Drive

For a copy of this presentation, visit www.lafayettevillage.org/docs/TrafficCalmingPresentation.pdf