I was thinking the same thing because the traffic near the main gate is just insane during the morning rush. It is much easier to just filter through the lanes and find a small parking spot near the library. You should check some online platforms to compare prices for a motorcycle rental Riyadh https://getrentacar.com/en-US/motorcycle-rental/saudi-arabia-riyadh. It is usually a better deal for us students than trying to buy a bike and dealing with all the maintenance yourself.