The duration of the contract depends basically upon four factors. These factors include any legal restrictions, the type of maintenance model utilized, the experience of the road authority in outsourcing, and whether the contracts are integrated. Usually the development of maintenance contracting started with 1-3 year duration in contracts and now has progressed to about 7 years, with British Columbia, Canada and Western Australia setting the standard at 10 years. However, the bundling model will probably be five years or greater, which has been the duration period under discussion from the initial developing plans.