Edmonton Journal

DARREN MARKLAND,

Inconvenie­nce is worth it, says Dr. Darren Markland.

- Darren Markland is an intensive care physician and nephrologi­st at the Royal Alexandra Hospital.

James can’t remember the accident. A year after leaving the intensive care unit and struggling through his rehabilita­tion at the Glenrose Hospital, relearning how to speak and walk and trying to step back into the life he left behind on the that fateful September morning, James still can’t remember being hit by the car.

The paramedics found him face-down on a residentia­l road. His body had been flung 10 metres from the skid marks. He had been in the crosswalk, but the sun was just rising and likely had been in the eyes of the eastbound driver. Witnesses said the car was not speeding. The impact speed was estimated at 40 km/ h.

James’s injuries were devastatin­g: two broken legs, multiple broken ribs and facial bones, and, most concerning, a severe traumatic brain injury. The collision report described a shattered windshield, with a basketball-sized depression made by James’s skull. I knew the swelling in his brain would change his life forever.

As a critical-care physician, I encounter stories like James’s far too often. Every time I care for a pedestrian or cyclist involved in a collision with a vehicle, I think about speed limits.

Research has proven that the risk of death or serious injury increases exponentia­lly as vehicle speeds exceed 30 km/ h. Head injuries make up 15 per cent of those who are seriously harmed. In pedestrian-heavy areas, speed reductions afford drivers more reaction time to avoid collisions and, in impacts with pedestrian­s, improve the odds of avoiding death or serious injury. Slower speeds on residentia­l streets don’t just prevent deaths, they preserve lives.

The effects of collisions at 40 km/ h are often catastroph­ic and lifelong. No amount of medical therapy can restore someone with a traumatic head injury to their previous self. We can pin the bones, release the pressure on the brain and treat the shock and bleeding, but patients are rarely ever the person they were before a brain injury. The repercussi­ons in lossof-earning potential, compounded by ongoing need for social and financial support required multiplied over the remainder of their lifespan, costs millions per case. The only recourse is prevention.

Enriching the urban landscape with active transporta­tion options has clearly demonstrat­ed health benefits, with reductions in the incidence of diabetes, vascular disease and dementia. Key to keeping people active is the assurance of public safety.

Lower speed limits help to not only save lives; they can revitalize neighbourh­oods and make them healthier places. When streets feel safe, families, children, and seniors go outside more.

I got to know James well during his fourmonth stay in hospital. He had been fresh out of university, just starting his job as a high school math teacher. He had been an accomplish­ed artist who worked in watercolou­rs and was training for his first marathon. He had played the guitar and had recently bought a mandolin.

James made a remarkably quick recovery and eventually left our unit for further rehabilita­tion. He underwent four surgeries and survived two separate bouts of pneumonia. He spent six more months in a rehabilita­tion hospital.

Despite this, he was never the same. He was unable to teach again. He didn’t have the shortterm memory to keep a classroom organized.

James also struggled with depression and severe anxiety, and his daily headaches were more powerful reminders of his accident than the scars on his face. He has receded socially as well, often spending weeks in his apartment alone. He jokes about selling me his mandolin.

We need to slow down vehicles on our residentia­l streets. The research is indisputab­le: collisions between pedestrian­s and vehicles going 50 km/h are deadly.

Some have argued that a reduction to a speed limit of 40 km/ h is enough. It isn’t. As James’s story illustrate­s, with a vehicle moving at 40 km/ h, a momentary distractio­n, a flash of sunlight, can result in a lifelong disability or worse.

From a medical perspectiv­e, a residentia­l speed limit of 30 km/ h is the safest course. Sure, it may add a few seconds to every vehicle trip, but aren’t human lives worth it?

The research is indisputab­le: collisions between pedestrian­s and vehicles going 50 km/h are deadly.

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