Ottawa police announced Friday that there's not enough evidence to lay charges in the August death of a cyclist.

The 53-year-old cyclist was killed when his bike collided with a car on Boyce Avenue, near Carling Avenue, in Ottawa's west end.

The city has had at least four cycling deaths this year, including the victim of the Boyce Avenue crash and an elderly Ottawa man who passed away Saturday after a Sept. 25 accident.

A Google map created by local cyclists of dangerous spots for Ottawa riders. (www.ottawabikingproblems.ca)

Bike safety study ongoing

Meanwhile, cyclists are anticipating further results of a city study into cycling safety. Ottawa launched an online survey in August that asks riders to list the routes and lanes they fear most, as well as other information that will help the city choose where to make safety improvements.

Transportation planner Zlatko Krstulich told CBC that the city hopes to come up with a plan by the end of this year.

"We are looking for cyclist input on the most hazardous intersections they encounter," the survey says. "Many cyclists have taken the same route hundreds of times and therefore are well aware of patterns and specific risks at those locations."

Some cyclists have also created a web-based project - Ottawabikingproblems.ca - to collect information on areas that are dangerous or inconvenient for biking. The site has identified almost 100 hazardous locations in the city.