I really don't think a bike needs to have a plate, it sounds absurd to me. However, I do think, at least in America, that bikes should be charged a one time registration fee that cost 5% of the value of the bike for all bikes including kids bikes, this money would be used to increase funding for bike paths, lanes and trails, plus as an added bonus theft protection that would enable the bike to recovered and returned by searching the serial number on the computer and finding the owner. A kid's $50 Walmart bike would only cost the parents another $2.50, they won't even blink at that, while an adult buying the average bike costing $400 is only going to spend $20, again nothing; while of course a high price bike that cost say $7,000 will cost the buyer an additional $350 won't scream too much because they can afford a $7,000 bike. If they had that active when I bought my Lynskey bike for $2,800 in 2013, my registration cost would have only been $140 which for the benefit of getting some sort of theft protection would have been worth it to me. A decent mid level bike for say $1,500 would only cost an additional $75, again not bad considering the benefits. People spend on average $92 a MONTH at Starbucks! that doesn't even include all the fast food **** people buy each month that averages another $100 a month. My god for someone who goes to Starbucks and fast food to cry about paying 5% more for a bike is just insane when they're paying more than that for coffee and **** a month!