During a frosty, clear morning sunrise walk, I came upon these odd lines on a curve on a road. I had to grab this quick phone photo while standing around a blind corner during commuter hour!
What do you think caused the lines?
˙ǝʌɹnɔ ǝɥʇ punoɹɐ sǝuᴉl ɹǝʇɐʍ lǝllɐɹɐd ǝɥʇ pǝʇɐǝɹɔ ʇɐɥʍ s,ʇɐɥʇ pu∀ ˙ʇsoɹɟ ǝɥʇ sʇlǝɯ ʎllɐnʇuǝʌǝ puɐ ʇno sdᴉɹp ǝuᴉɹq ǝɥ⊥ ˙pǝɥɔɐʇʇɐ ɹɐq pǝʇɐɹoɟɹǝd ƃuol ɐ ɥʇᴉʍ ʞɔnɹʇ ɐ ƃuᴉsn (uoᴉʇnlos ɹǝʇɐʍ ⅋ ʇlɐs) ǝuᴉɹq ǝsuǝdsᴉp sʞloɟ pɐoɹ ǝɥ⊥ ˙(ɹǝʇǝɯolᴉʞ ϛ˙0 ʇnoqɐ) llᴉɥ dǝǝʇsƃuol ɐ uʍop sdoɹp pɐoɹ ǝɥʇ uǝɥ⊥ ˙ǝɹǝɥ ɹǝuɹoɔ dɹɐɥs ɐ s,ǝɹǝɥʇ `pǝuoᴉʇuǝɯ s∀