TIL the raised reflectors in between lanes on the highway also indicate direction. Normally they reflect white or yellow but if they appear red, it's becasue you are going the wrong way. :
What are these things on the road? On all lane lines : r/whatisthisthing
Road Reflector Lane Marker Stock Photos - Free & Royalty-Free Stock Photos from Dreamstime
Botts' dots visible, bumpy and probably harmless | Road Warrior | News | News Columns
hotspot correct & incorrect images not showing correctly | H5P
Highway reflectors hi-res stock photography and images - Alamy
Reflectors road hi-res stock photography and images - Alamy
Here are some of the changes you might notice along California's highways – Orange County Register
Pavement Markings and What They Mean - Driversprep.com
How Do "Cat's Eye" Road Studs Work?
A Road reflector lane marker in the street Stock Photo - Alamy
Hawaii Road Signs (A Complete Guide) - Drive-Safely.net
RS-A08-002 Amber Red White Reflective Studs on Motorway Lane Plastic Road Divider Reflectors - STARS PLASTIC
Wyoming tries high-tech to prevent deer-in-the-headlight crashes - Los Angeles Times
What are the different road stud colours and what do they mean? | Highway Code Resources
Here is everything you need to know about cat eyes - Magma HDI
Raised Pavement Markers - Civil Engineering Portal
Pavement Markings – A+ Driving School
Reflectors road hi-res stock photography and images - Alamy
Lane Reflectors Stock Photos - Free & Royalty-Free Stock Photos from Dreamstime
Lane Guidance Systems - LaneLight – LED Enhanced Warning Systems
Performance, environmental impact and cost analysis of marking materials in pavement engineering, the-state-of-art - ScienceDirect
Road surface marking - Wikipedia
Colorado needs these reflector markers for lanes on the highway especially when it rains. Wonder who you talk to about this? : r/Denver
