Remember the post regarding the soil cells? So this is how the outcome of how it looks like. It acts as a fire engine access way. It's a provision of external access to building for fire fighting and accessibility in case of fire. With the yellow embedded bollards on the grass, it's an indicative mark for fire engine vehicle to access. It should have a clear width of of 6m minimum and located near to fire hydrant. 

I hope someday, I could obtain FFSC license. It could be incredible to learn more knowledge. Inshallah.

Reference: https://www.scdf.gov.sg/content/scdf_internet/en/building-professionals/publications_and_circulars/fire_code_2002handbooks/_jcr_content/par/download_29/file.res/hb_v5_ch4.pdf