Creating more sustainable transportation systems is a crucial part of reducing emissions and promoting access to clean and affordable mobility options. Here are some strategies that can be employed:

1. Encourage active transportation: Active transportation, such as walking, cycling, and using non-motorized scooters, can help reduce emissions and improve public health. Cities can promote active transportation by investing in safe and accessible infrastructure, such as bike lanes and pedestrian paths.
2. Shift to electric vehicles: Electric vehicles (EVs) can help reduce emissions from transportation, and the cost of EVs is decreasing rapidly. Governments can incentivize the purchase of EVs through subsidies and tax credits, and build out charging infrastructure to support EV adoption.
3. Promote public transportation: Public transportation, such as buses and trains, can reduce emissions and improve access to mobility options. Cities can invest in public transportation infrastructure and provide incentives to encourage public transit use.
4. Use alternative fuels: Alternative fuels, such as biofuels, hydrogen, and natural gas, can help reduce emissions from transportation. Governments can incentivize the use of alternative fuels and invest in infrastructure to support their use.
5. Implement transportation demand management: Transportation demand management strategies, such as congestion pricing, carpooling, and flexible work arrangements, can help reduce traffic congestion and emissions.
6. Encourage walking and biking: Encouraging people to walk or bike for short trips can reduce the number of car trips taken, which can reduce emissions and improve public health. Cities can invest in infrastructure to support walking and biking, such as sidewalks and bike lanes.

Overall, creating more sustainable transportation systems requires a multi-faceted approach that considers a range of strategies. By promoting access to clean and affordable mobility options, we can reduce emissions, improve public health, and create more livable communities.