Showing posts with label traffic calming. Show all posts
Showing posts with label traffic calming. Show all posts

Wednesday, December 29, 2010

Year-end Review

Here's a a quick recap of new Pedestrian/Bicycle infrastructure installed by the City of Laurel this year:

Traffic Calming

Bikeways
  • Completed Phase 1 of the Laurel Bikeway MasterPlan, comprising three miles of striped/signed bike routes
  • Installed the City’s first on-street bike lanes and sharrows.
  • Procured 16 custom bike parking hitches to be installed at various public locations around the City.
  • Constructed 4th Street boulevard (CIP)
New sidewalk/paths
Pedestrian crossings and related improvements
All in all, a good year for walkers and bikers in the City of Laurel.

Tuesday, October 26, 2010

4th Street Boulevard Construction

Construction is underway on the final piece of the 4th Street Capital Improvement Project.  This project includes the transformation of this...

4th Street near Ashford Blvd
 ...into this:

Cross-section of 4th Street, with bike lanes and tree-lined median
The tree-lined center-medians will aid in traffic calming on this road and also will allow for better traffic management, when traffic picks up again on the Laurel Mall site.  DPW crew are currently installing bikes lanes, and contractors are repairing sidewalk, curb-and-gutter.  A new pedestrian crossing is being installed at the intersection of 4th Street and Ashford Boulevard.   In addition, the crosswalks and median openings at the intersection of 4th and Cherry will be widened to 14' wide on both sides of the intersection. These wider crossings will allow for easier and safer pedestrian and bike access from 4th Street to the Gude Lake, via the newly-built connecting path.  When all the concrete work is complete, contractors will mill and overlay select portions of the road. Construction is expected to take up to a month, depending on weather conditions.
DPW crew installing bike lanes on 4th Street today

Tuesday, October 19, 2010

Effects of Traffic Calming on Montrose Ave: Before and After Study

Traffic calming has previously been shown to reduce instances of speed in the City.  And now here's more poof:

This summer, the City installed a traffic calming island in the intersection of Montrose and 10th Street in order to slow down motorists on Montrose Ave, which has a speed limit of 25mph. This new concrete center-island median is bisected with a ladder-style crosswalk and has added signage to improve visibility.  DPW conducted a "before" study to determine the number of speeders prior to its installation. After letting drivers adjust to the presence of the new island for a couple of months, we conducted an "after" study to compare the island's effect on driver behavior.  Here are the results:
  1. Speeders in excess of 25 mph decreased from 72.5% of all vehicles to 41.3% of all vehicles.
  2. Speeders in excess of 30 mph decreased from 47.7% of all vehicles to 14.1% of all vehicles.
  3. Speeders in excess of 35 mph decreased from 19.4% of all vehicles to  2.4% of all vehicles.
  4. Speeders in excess of 40 mph decreased from 4.7% of all vehicles to 0.3% of all vehicles.
The results, while not perfect, show that speeding drivers slow down dramatically when there is a large concrete island in the middle of the road; speeding drivers apparently prefer slowing down over crashing. Call it blunt, but nothing else reduces speed as much, or is more cost-effective than simply removing, by design, the ability to speed.

Before and After Study showing effect of traffic calming on Vehicle Speeds

Thursday, September 30, 2010

Aerial view of Laurel: Google updates its maps

A month ago, Google's satellites passed over Laurel and they updated all aerial imagery of the City.  There, you can see changes made to the City over the last few years.  Below, are some of very projects that WalkLaurel has mentioned over the last year or so.

Roundabout at Montrose/Harrison

Traffic Calming Island at Montrose/10th

Intersection of Montrose/4th looking spiffy.  Note the Sharrows

New Path connecting Gude Lake with Cherry/4th

 New Pedestrian Signal and Sidewalk at Van Dusen/Killbarron

New Sidewalk and pedestrian ramps at Van Dusen and Cherry

The City's first Bike Lanes, on 4th Street

Decorative crosswalks at 4th and Montgomery

Bulbout and decorative crosswalk at Main and 5th

 Decorative crosswalks at Montgomery and Sandy Spring

Finally, the future ICC interchange with I-95. And the empty land that will someday be Konterra Town Center 

Tuesday, July 6, 2010

New Traffic Calming Island at Montrose & 10th

Speed profile data collected on Montrose Ave, just east of 10th Street, showed a high number of speeders and an intolerably high number of excessive speeders (35+ mph in a 25 mph zone). See data below:










To mediate this, the City is installing a center-island median (26' long by 10' wide) in the intersection. This median will serve two purposes:  1) focus attention of motorists toward the intersection where a new crosswalk is being installed; and 2) force speeders to slow down to a residential speed.

The new island will look something like this and will be bisected by a ladder-style crosswalk:



Status update:  Complete.

Tuesday, August 25, 2009

Traffic Calming: Before-and-After Study

The City of Laurel conducted a Before-and-After Study of traffic calming measures at two locations in the City:
1) Greenview Drive
2) Montrose Traffic Circle.

Results:
  • Narrowing the roadway on Greenview, by striping parking lanes, resulted in an 11% reduction in all speeders and a 21% reduction in motorists who exceeded the speed limit by 10+ mph.
  • Constricting the westbound lane entering the Montrose traffic circle from 16 ft to 13 ft wide and adding splitter islands to the traffic circle reduced the number of speeders (25+mph) by 80%. Motorists traveling 30+ mph were reduced by 96%.
(click Greenview graph for larger figure)









(click Montrose graph for larger figure)