With development on the rise in the area, that intersection has been a busy one and due to traffic volumes on Harvard, have traditionally had trouble turning either direction onto Harvard from Mission or the freeway exit. The roundabout will cut the wait time by eliminating the long lines by keeping traffic moving at the intersection.
that signals and stop signs can’t:
- Low travel speeds – Drivers
must slow down and yield to traffic before entering a roundabout. Travel
speeds in a roundabout are typically between 15 and 20 miles per hour.
- No light to beat –
Roundabouts are designed to promote a continuous, circular flow of
traffic. Drivers need only yield to traffic before entering a roundabout;
if there is no traffic in the roundabout, drivers are not required to
stop. Because traffic is constantly flowing through the intersection,
drivers don’t have the incentive to speed up to try and “beat the
light,” like they might at a traditional intersection.
- One-way travel – Roads
entering a roundabout are gently curved to direct drivers into the
intersection and help them travel counterclockwise around the roundabout.
- Conserved fuel, reduced emissions
to a study by the Insurance Institute for
Highway Safety, intersections
converted to roundabouts
can reduce delays up to 62-74 percent, cut fuel consumption up to 235,000
gallons per year and cause fewer emissions and pollutants to be released
into the atmosphere.
the WSDOT YouTube channel.