What does it mean when an area of road is painted with white

L-shaped marks painted on local roads, not by DPW. : r/whatisthisthing

How are those white lines on roads drawn? - Quora

Alberta Road Markings and what they Mean - EverLine Coatings

The South Fraser Blog: What's with the grey curb paint? A quick primer

The Mystery Of The White Arrows Solved

Los Angeles is spending $40,000 per mile to paint streets white

City turns to fresh road-painting technology to hold the line

Pavement Markings and What They Mean

Road lines and markings

Turns out painting the streets white doesn't make cities cooler

Colorful Language: Decoding Utility Markings Spray-Painted on City

Coating streets with white paint lowers temperatures

Explainer: What do diamonds painted on the road mean? : r/newzealand

Road surface marking - Wikipedia