[habi]

> open your door without looking if a cyclists is coming from behind,

Once you learn about the https://www.dutchreach.org it's hard to forget it. It helps to avoid the not-looking-for-cyclists problem :)

(It might even have been here on HN where I learned about it.)

[KineticLensman]

The Dutch Rear has recently been added to the UK Highway Code [0], a mix of legal requirements and suggestions for safe road use.

[0] https://www.gov.uk/guidance/the-highway-code