Recently the NCHRP published a synthesis on #roadsafety audit practices at state DOTs. Road Safety Audits are one of my favorite topics, so I was eager to dig in. ↓ My top 7 takeaways below and in the deck ↓
1. Almost all State DOTs (43 of 48) conduct road safety audits.
2. Four states complete between 50 and 100 road safety audits per year, but the most common annual quantity range is between 1 and 10. I may be biased :) but I think this should go way up, considering takeaway # 7 below ↓
3. Not all road safety audit recommendations must or can be implemented. 30 DOTs implement between 11% and 25% of road safety audit recommendations. Only 7 implement more than 75% of recommendations. I occasionally encounter agencies worried that they will be obligated to implement every RSA recommendation or else be liable, but this is simply not the case.
4. Planning stage road safety audits were the most frequent RSA type among state DOTs (the best stage for near-miss analysis), while only 6 DOTs ranked design stage RSAs as the most frequent stage. I have done more than 600 road safety audits at all stages and can personally attest to the value add at each stage. In my opinion, many agencies could improve their balance across stages to leverage more benefit from RSAs.
5. 66% of DOTs use near-miss analysis to help inform RSAs, although they generally do it infrequently. This is a major emerging trend with significant room for growth. I'm biased here as well, because I helped build MicroTraffic, the world's leading video-based near-miss analysis company that was deployed in 100 cities before being acquired by Miovision. I know this would not have been anywhere close to 66% just a few years ago, so this statistic made me proud.
6. Only 7% of DOTs use 1 to 3 RSA team members, while 23% use more than 10 team members! In my opinion, smaller teams would unlock more RSAs, since the top cited challenges to RSAs are staff availability (60%) and funding (37%). In limited applications I have recently started experimenting with solo RSAs, that is, doing them by myself. It is my responsibility as an engineer to know my limitations where I need additional support, and I don't need that for every project. Solo RSAs can keep costs under control and quality up in the right circumstances.
7. Speaking of value-add, the average benefit cost ratio of road safety audits in a 2012 FHWA study was 19.3 to 1, and in a 2016 Canadian study it was 55:1. Doing more RSAs at more stages using the best technology available is a no-brainer financially and completely worth the investment. With stats like these, the only significant liability seems to be in not doing RSAs.
To grab the full synthesis report hot off the press, which the authors did a great job on, head on over to https://lnkd.in/dfwhkkSG.
Senior Executive at Titagarh Rail Systems Ltd.
3wAny requirement