June McCarroll

[9] By 1888 her father had abandoned his second wife and son in Kansas and moved to Los Angeles, California,[10][11][12][13][14] where McCarroll later joined him.

[16] The 1900 Los Angeles census shows McCarroll as June Hill, physician, married three years but no husband in household.

[18] McCarroll attended a medical college in Chicago, then eventually moved back to Southern California in 1904 with her second husband, James R.

[20] Within two years, she had remarried, this time to Frank Taylor McCarroll,[21] the local station manager for the Southern Pacific Railroad.

[22]McCarroll soon communicated her idea to the local chamber of commerce and the Riverside County Board of Supervisors, with no success.

Finally, she took it upon herself to hand-paint a white stripe down the middle of the road, thus establishing the actual width of the lane to prevent similar accidents.

In November 1924, the idea was adopted by the California Highway Commission and 3,500 miles (5,600 km) of lines were painted at a cost of $163,000 (equivalent to $2.3 million in 2023[25]).