The Transportation and Development Institute (T&DI) is one of the specialty institutes of the American Society of Civil Engineers. Like many institutes, T&DI has a host of committees that track further areas of interest for the institute. The committees of T&DI address topics such as aviation, freight and logistics, infrastructure systems, rail and public transit, roadways, and development. As part of the development council, T&DI has a committee on sustainability and the environment. This committee on sustainability addresses all facets of sustainability within transportation engineering. This chapter will cover four of those areas to provide a glimpse of how sustainability can be applied in the fourth and final application area of sustainability, which is transportation: material reuse – reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS), mutlimodal transportation, intelligent transportation systems, and crash modification factors (CMF).