I found some interesting info here. They do not list the percentage of those wearing helmets who died.

Looks like those bike lanes are fairly safe.

Andy


https://helmets.org/stats.htm

Highlights of US statistics available from the US Department of Transportation Based on 2015 data. (released in June, 2017 and still the most recent).


818 bicyclists died on US roads in 2015, an increase of 12.2 per cent and the highest number since 1995. (It was 1,003 back in 1975)

45,000 bicyclists were injured in traffic 1n 2015, down 10 per cent from 50,000 in 2014 (52,000 in 2010)



37 Bicyclists 14 and under (7% of total) were killed in 2015. 5,000 were injured.

Average age of a bicyclist killed on US roads: 45 (36 in 2002)

Males killed 87%. Males injured 83%.

70% of fatal crashes were urban. 61% were not at intersections.
3% were in bike lanes.

Fatalities were about half during daylight hours.

Bicyclist deaths represented 2.3% of all 2015 traffic fatalities.

27% of the cyclists killed had been drinking. (Blood alcohol over .01 g/dl) 37% of the crashes involved either driver or cyclist drinking.