City of Newark Logo
5/27/2019 2:23AM
Page Spacer

Why Roundabouts?

 

SAFEST FORM OF INTERSECTION CONTROL AVAILABLE:

  • 35% Reduction in total crashes
  • 76% Reduction in injury crashes
  • 81% Reduction in fatal crashes
  • 30-40% Reduction in pedestrian crashes

Compared to signalized intersections, as published in NCHRP Report 572, Roundabouts in the United States, Transportation Research Board, 2007

 

WHY ARE THEY SAFER?

  • Severe crash types nearly eliminated (no head-on, angle, and left turn crashes)
  • Fewer conflict points (vehicles and pedestrians) (less conflict = less crash potential)
  • Vehicle speeds are reduced through geometry (slower speeds = decrease in crash severity)
  • Shorter pedestrian crossing widths (less time in street = less potential for crash)
  • No ability to speed up to “beat the light”
  • No red light running
  • No left turn crossing conflicts (with pedestrians and opposing traffic)
  • Driver’s attention is focused on the roadway, not up at traffic signals

 

EFFICIENT

  • Keep traffic moving
  • Shorter delays and queues
  • Signals are much less efficient during off-peak times (waiting at red light with no conflicting traffic)

 

COSTS

  • Cheaper than signals when planned with roadway reconstruction work and built within existing right-of-way
  • Signals have added monthly electrical bills
  • Signals have added maintenance costs (see below)

 

MAINTENANCE

  • Little maintenance required (landscaping and signage only)
  • Signals require annual inspections
  • Signals require equipment repairs and upgrades
  • Signals can malfunction and are subject to power outages

 

GREEN

  • Less air and noise pollution (less stop and start)
  • Less energy consumption (gas for cars and electricity from signals)
  • Landscaping opportunities

 

HOW TO DRIVE SINGLE LANE ROUNDABOUTS:

  • Yield to pedestrians at the entering crosswalk
  • Yield to traffic inside the roundabout (look left)
  • Yield to pedestrians at the exiting crosswalk

 

MORE INFORMATION: