User:BridgeW/Transit-oriented development

Environment
TOD has been shown to reduce multiple types of emissions in Los Angeles during life-cycle assessments; greenhouse gasses, respiratory irritants, and smog forming emissions can be reduced by approximately 30% in TOD when compared to lower density areas. This is attributed to various factors including residents having more travel options, reduced travel distances for everyday activities, and higher density housing reducing energy use per residence. In Dhaka TOD can also aid in reducing travel related CO2 emissions on a neighborhood level, specifically for work and school trips, due to residents traveling less distance to these locations. And it is suggested that the improvements in public transportation, pedestrian, and bicycle infrastructure that are associated with TOD and related policies may improve these reductions. However, TOD has also been found to be a major contributor to the urban heat island effect in Brisbane both having higher temperature and more rapidly increasing temperatures than non-TOD areas. This difference has been linked to TOD having a larger portion of non-porous land and less natural spaces, which must be considered when planning TOD.

Economy
TOD, specifically along light rail transit lines, have been seen to increase the amount of new businesses in Phoenix within one mile of a station, with businesses in the knowledge, service, and retail industries experiencing 88%, 40%, and 24% more new starts respectively than non-TOD areas. However, a decrease in manufacturing facilities has also been noted in TOD; similar results are likely to be seen in other U.S. cities. The value of condominiums in San Diego generally increases with decreasing distance from light rail transit stations, increasing walkability of neighborhoods, and increasing available services. This points to TOD as a preferable style of neighborhood to people, showing that market-driven creation of TOD neighborhoods may be possible in U.S. metropolitan areas. Resident expenses in TOD have been shown to be lower in well developed areas in spite of the generally higher rental costs due to lower energy use and travel costs, in Los Angeles the savings are around $3100 per year for one household.