Purple dots phase II.

Details

• Alternative Title:
  Maryland Transportation Authority experimental traffic control device testing at Maryland toll plazas : FHWA experimentation #3-181 (ex)-purple dot markings for E-ZPass® lanes, June, 2012
• Corporate Creators:
  Kittelson & Associates, Inc
• Contributors:
  Mukai, Roxane Y.
• Subject/TRT Terms:
  • Highway traffic control
  • Traffic control devices
  • Toll roads
  • Toll plazas
  • Toll booths
  • Toll facilities
  • Road marking materials
  • Highway traffic control
  • Traffic control devices
  • Toll roads
  More +
• Publication/ Report Number:
  Project No. 8157.5
• Resource Type:
  Tech Report
• Geographical Coverage:
  Maryland
• Corporate Publisher:
  Maryland Transportation Authority
• Abstract:
  On behalf of the Maryland Transportation Authority (MDTA), Kittelson & Associates, Inc. ; (KAI) is conducting an evaluation of an experimental traffic control device at a Maryland toll ; plaza. This report summarizes our findings for the evaluation of the purple dot pavement ; marking treatment. The purple dots were installed on the northbound Fort McHenry Toll ; Plaza approach in Baltimore, Maryland in June 2011. They were installed for three dedicated ; E-ZPass® lanes (Lanes 3, 6, and 10) as shown in Figure 4 in the main section of this report. ; The goal of applying the purple dots is to improve toll plaza operations and safety between ; the tunnel mouth and toll plaza by reducing conflicts created by lane changes and weaving ; just prior to the plaza. Additionally, the purple dots are intended to improve wayfinding for ; E-ZPass® customers ; This is the second time purple dots have been installed on the northbound Fort McHenry ; Toll Plaza approach. Under the Phase I experiment, purple dots were installed in November ; 2005, and removed several years later when a portion of the toll plaza was rebuilt and the ; roadway was resurfaced. The results of the Phase I experiment are documented in an MDTA ; Report prepared by KAI dated May 11, 2007 (Ref. 1). In Phase I, the purple dots were generally ; found to reduce lane changing and increase utilization of the E-ZPass®ONLY lanes on ; the right side of the toll plaza. ; This report provides the results of the current, Phase II experiment, as well as analysis of ; Phase I crash data not available at the time the Phase I report was prepared. The Phase II ; experiment was conducted in response to the Federal Highway Administration’s (FHWA) ; comments on the Phase I experiment. At this time, the Phase II purple dots remain in place ; at the Fort McHenry Toll Plaza. FHWA granted approval for experimental use of the dots ; through July 1, 2012.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/24690/dot_24690_DS1.pdf
• File Type:
  [PDF - 8.65 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:7374f649aff40e41cdc57dd4d4cf6523f990207dfe12305aef4a6f60151d286a