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Evacuations with cars are a bottleneck
(lemmy.world)
cross-posted from: https://lemmy.world/post/15424245
A highway camera photo shows traffic in FortMcMurray jammed in the southbound lane of Highway 63 on the north side of the Athabasca River. The image was captured at 3:11 p.m. MT, about an hour after an evacuation order was issued for four neighbourhoods. (511 Alberta)
Evacuation order issued as wildfire threatening Fort McMurray draws closer https://www.cbc.ca/news/canada/edmonton/alberta-wildfire-grande-prairie-fort-mcmurray-1.7203695
Also, I sincerely doubt that the city would have enough busses to carry the whole population simultaneously (it would never really make sense to have that many busses), and in this case, the nearest population center is a four hour drive away.
Although, if there were a high speed rail link between Fort McMurray and Edmonton, that would take a lot of pressure off.