Another reason for accidents on the parkway
RE: Accidents on the RHVP
There is another more tragic reason for some of the accidents where the Linc and the Red Hill expressway meet besides driver error.
Why are the accidents occurring uphill? One reason is centrifugal force caused by the curve’s design. The design of the roadway, coupled with the wrong style of pavement to accommodate this inertial force, may explain the head on style of accidents that have been occurring.
The up bound lanes of the Red Hill at the Linc are at the apex of the speed limit at the bend as drivers start heading west. So you have speed, inertia force pushing the vehicle outwards, plus slick pavement and the potential of lighter vehicles that are now under unforeseen centrifugal forces and the vehicles are now out of their element resulting in head on collisions.
Years ago the Hamilton bound lanes of the 403 by the high level bridge underwent extension changes to lengthen the curve for this exact reason. Drivers were lulled by the long curve and before they knew it the inertia placed on the vehicles by the curve’s design pushed them in the barriers.
This can be verified by either schematics of the road or even old aerial photographs.
The Red Hill expressway slingshot effect may also be a result of trying to squeeze that bend in the road into a small area resulting in a tighter turn and resulting in greater forces placed on vehicles. Bill Watts, Dundas