W1-4aL Reverse Curve Horseshoe JPEG
https://www.codot.gov/safety/traffic-safety/assets/traffic-signs/warning/w1-4al/w1-4al-reverse-curve-horseshoe-jpeg/view
https://www.codot.gov/safety/traffic-safety/assets/traffic-signs/warning/w1-4al/w1-4al-reverse-curve-horseshoe-jpeg/@@download/image/W1-4aL_ReverseCurveHorseshoe.jpg
W1-4aL Reverse Curve Horseshoe JPEG