Roundabout configuration questions answered

BC Highways version will probably require that a truck apron be used if large trucks turn to/from the north-south road

Some local residents are opposed to the roundabout proposed for the corner of Highway 5 and the road to Wells Gray Park.

Others, who otherwise support the roundabout, have questioned the proposed design, which has two lanes running east-west for the highway but only one lane running north-south.

An animation found by reader Sharon Chaytor from Ourston Roundabout Engineering shows a similar two-lane/one-lane roundabout. The animation shows a variety of vehicles and pedestrians, including large trucks, negotiating the roundabout without apparent difficulty.

One possible important difference between the animation and the roundabout proposed for Highway 5 might be lane widths.

The single lanes in the animation appear to be at least half again as wide as each of the double lanes, while in a graphic from BC Highways of the local proposal they appear to be the same width.

According to Phillip Weber, principal project manager with Ourston Roundabout Engineering, “The original design our animation is based upon has wider circulating lanes north-south so that large trucks wouldn’t need to use a mountable truck apron around the central island.”

“The BC Highways version will probably require that a truck apron be used if large trucks turn to/from the north-south road,” Weber said. “On the other hand the BC Highways version may result in a more compact roundabout footprint. So there are pros and cons, and the best choice will depend on site context and other issues.”

Weber asked to see the highways department’s graphic but no further comments were received by press-time.

Ourston Roundabout Engineering describes itself as North America’s pre-eminent roundabout design team, with experience dating back to 1990.

 

The engineering company’s animation is available at www.ourston.com/resources/educational-tools/animations/four-leg.html.

 

 

Just Posted

Convicted animal abuser to return to B.C. court May 21

Catherine Jessica Adams is facing a breach of probation charge

Clearwater Fire Department to reach 50-year milestone

A look at the organization through the decades

Emergency exercise to test community’s disaster response

Mock carbon monoxide leak emergency exercise will be taking place on May 28

UPDATE: B.C. pilot killed in Honduras plane crash

The crash happened in the Roatan Islands area, according to officials

Carbon dioxide at highest levels for over 2.5 million years, expert warns of 100 years of disruption

CO2 levels rising rapidly, now higher than at any point in humanity’s history

B.C. residential school survivor’s indomitable human spirit centre of school play

Terrace theatre company plans to revive Nisga’a leader Larry Guno’s Bunk #7 next year

B.C. ferry stops to let black bear swim past near Nanaimo

Queen of Oak Bay brakes for wildlife in Nanaimo’s Departure Bay

Mother dead, child in critical condition after carbon monoxide poisoning at Shuswap campground

The woman was found unresponsive insider her tent and the youth was taken via air ambulance to hospital

Canada’s parole officers say correctional system has reached breaking point

About half of Canada’s federal parole officers work inside penitentiaries and correctional institutions

Montreal researchers create audible hockey puck for visually impaired players

Three years ago, Gilles Ouellet came up with the idea for a puck that makes a continuous sound

Former B.C. Greyhound bus drivers head to Penticton for goodbye party

Big bash runs until Sunday, funded by drink cans left behind on busses over the years

Boy, 12, arrested after allegedly pulling a knife on another child at a Surrey park

The child was later released into his parents’ custody as Surrey RCMP continue their investigation

Most Read