An Evaluation of New Jersey Jug-Handle Intersection (NJJI) with and without Pre-Signals

Conventional treatment of left-turn at major arterial intersections is often found to be the major cause of poor arterial operations, especially under a heavy volume condition. New Jersey Jug-handle Intersection (NJJI), an unconventional intersection scheme, eliminates direct left turn and has been in place on NJDOT heavy-volume arterial roadways for quite a long time. The NJJI scheme separates left turn vehicles prior to or after crossing the intersection via a right side jug-handle (forward or reverse) ramp and then allow them to make turn onto cross-street via ramp terminus separated from the main intersection. By introducing jug-handle ramps at all four approaches of a four-legged intersection, four identical ramp termini can be constructed. These ramp termini can be signalized along with the main intersection and each of them can be operated on a two-phase signal. CORSIM, a micro-simulation model, has been utilized to evaluate and compare the operational performance of a forward ramp NJJI scheme (with and without signals at the ramp termini) with a conventional intersection (CI) scheme. The simulation study reveals that the NJJI scheme with pre-signals significantly improves traffic operations while increasing the intersection capacity. Other benefits of the NJJI scheme include reduction of vehicle stop time, fuel consumption and emission level.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: References;
  • Pagination: pp 1245-1254
  • Monograph Title: Transportation and Development Institute Congress 2011 : Integrated Transportation and Development for a Better Tomorrow

Subject/Index Terms

Filing Info

  • Accession Number: 01347165
  • Record Type: Publication
  • ISBN: 9780784411674
  • Files: TRIS, ASCE
  • Created Date: Aug 8 2011 2:08PM