From the experiences of many biking or trying to bike in the Philippines, painted lines are not enough for bike lanes. Only recently, cyclists using bike lanes that did not have any physical barriers to deter motorists from encroaching have been involved in crashes, with at least a couple being reported as fatal for the cyclists. Here is an article on what cyclists need in order to ensure or at least improve the safety of their commutes.
UTC (2020) “White lines? Cyclists need more,” ITS International, https://www.itsinternational.com/its8/feature/white-lines-cyclists-need-more [Last accessed: 8/6/2020]
Commuters on bicycles along the Marcos Highway bridge bike lane
Are there differences regarding cycling in different countries? From a somewhat cultural-behavioral perspective, perhaps there are studies (though I am not aware of them yet) about how peoples from different countries or cities behave with respect to cyclists whether or not there are bike lanes designated for the latter’s use. I recall my experiences cycling in Japan and drivers are generally respectful of cyclists on the roads. Pedestrians, too, are very tolerant of cyclists on the sidewalks or designated areas for walking. Of course, the cyclist would have to do their share of respecting others’ spaces, too, and should behave and position themselves accordingly while traveling.