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Permanent Lane Shifts Can Be Problematic

May 7, 2018 Featured, Planning & Design, Transportation No Comments

St. Louis has numerous places where, if you drive, you know the lanes shift left or right. The recent work to raise Forest Park Parkway/Ave up to be an at-grade intersection with Kingshighway added two more: WB Forest Park Ave at Euclid Ave and SB Kingshighway at Forest Park. The other day I photographed the former.

Looking East toward Forest Park & Euclid — All 3 lanes of Westbound traffic must shift top the right while crossing Euclid
Looking East from the pedestrian refuge.
The planter protecting pedestrians has been hit numerous times, the yellow markers have been added to make them more visible.

On numerous occasions I’ve been on the #10 MetroBus in the left-turn lane from SB Kingshighway onto EB Forest Park and I’ve seen cars in the center of the 3  SB Kingshighway lanes just continue straight — not shifting to the right. This puts them in the left most of 3 lanes. The problem occurs when a car is also in the left lane and shifts to the right to avoid hitting the pedestrian refuge planter — suddenly you have two vehicles wanting to occupy the same space. I’m rarely in either intersection as a motorist though I have driven both since the change was made.

I have experienced our car nearly being hit in a similar situation on EB Chippewa at Meramec. When traveling EB on Chippewa you have two EB lanes until just past Morganford Rd when only the left lane continues EB and the right lane goes off right to Meramec St. Again, on numerous occasions I’ve seen vehicles in the right lane just continue straight ahead — nearly hitting our car at least once. When I’m driving I’m aware this intersection is poorly designed — so I anticipate other drivers might not be aware of what is expected.

Back ar Forest Park and Kingshighway & Euclid the volume of cars is much higher. Both pedestrian refuge planters have been hit/damaged by vehicles. I suspect traffic accidents have been caused when a motorist doesn’t shift to the right — going straight ahead which means they’re changing lanes in the middle of an intersection.

Most drivers who regularly travel these routes will learn/remember to shift. It only takes one driver not paying attention or visitor to cause an accident or hit the planter and damage their vehicle.

How will future autonomous vehicles handle these shifts? We can and should do better in our street design!

— Steve Patterson

 

 

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Where am I? Name the intersection and the 3 buildings that are visible.

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