Tulis kereta

Figure 1. Tulis kereta

I noticed this at the main Lintas-Bukit Padang junction the other day. Can anyone tell me what is tulis kereta?

Updated March 15th: Thanks to Freda, she has informed me that Tulis Kereta means embedding or writing your car plate number on your glass window as a form of safety precaution just in case your car plate gets changed so at least you have another way of identifying your car. This is usually done on both sides of the car’s passenger seats tiny (almost triangular shape) glass – the parts where your driving instructor used to ask u to pay attention to when learning to park.