School of Commerce, University of South Australia, Adelaide, SA, Australia.
College of Nursing and Health Sciences, Flinders University, Adelaide, SA, Australia.
Aust Occup Ther J. 2020 Jun;67(3):250-259. doi: 10.1111/1440-1630.12648. Epub 2020 Feb 4.
Returning to driving is often a goal for people with acquired disabilities. Vehicle modifications make it possible for people with both acquired and lifelong disabilities to drive yet can be costly. There has been no financial evaluation of vehicle modifications in Australia or internationally.
A social return on investment analysis of vehicle modifications was undertaken. Primary data were collected via qualitative interviews with consumers and other stakeholders (e.g. driver-trained occupational therapists, rehabilitation physicians, driving instructors, vehicle modifiers) (n = 23). Secondary data were collected from literature searches and used to identify suitable financial proxies and make estimations of the proportion of drivers with vehicle modifications experiencing each outcome. A co-investment model was adopted to estimate social return on investment and payback period for funder and consumer. Five scenarios were developed to illustrate social return for low-cost modifications (Scenario 1) through to high-cost modifications (Scenario 5).
Social return on investment ratios was positive for funder and consumer investment in all five scenarios. Social return on investment calculations based on co-investment ranged from $17.32 for every $1 invested (Scenario 1) to $2.78 for every $1 invested (Scenario 5). Consumers' payback periods were between 5.4 and 7.1 months, and funders between 3.5 weeks and 2 years 8.4 months.
Vehicle modifications represent sound investments for both funders and consumers. Given the short payback periods, funders should reconsider age restrictions on vehicles considered suitable for modifications, especially for low- to medium-cost modifications.
对于后天残疾的人来说，重新开车往往是他们的目标。车辆改装使得后天残疾和终身残疾的人都能够开车，但费用可能很高。在澳大利亚或国际上，还没有对车辆改装进行财务评估。
对车辆改装进行了社会投资回报率分析。主要数据通过对消费者和其他利益相关者（例如，经过驾驶培训的职业治疗师、康复医生、驾驶教练、车辆改装商）的定性访谈收集（n=23）。次要数据来自文献检索，并用于确定合适的财务代理，并对经历每种结果的车辆改装驾驶员的比例进行估计。采用共同投资模型来估算出资人和消费者的社会投资回报率和投资回报期。为说明低费用改装（情景 1）到高费用改装（情景 5）的社会回报，共制定了 5 种情景。
在所有 5 种情景中，出资人和消费者对车辆改装的社会投资回报率均为正值。基于共同投资的社会投资回报率计算，从每投资 1 美元获得 17.32 美元（情景 1）到每投资 1 美元获得 2.78 美元（情景 5）不等。消费者的投资回报期在 5.4 至 7.1 个月之间，而出资人的投资回报期在 3.5 周至 2 年 8.4 个月之间。
对于出资人和消费者来说，车辆改装都是明智的投资。鉴于较短的投资回报期，出资方应重新考虑适合改装的车辆的年龄限制，特别是对于低至中等费用的改装。
