@misc{indiciae02a331c7d80d,
  title = {AMTV headway sensor and safety design},
  author = {Johnston, A. R. and Nelson, M. and Cassell, P. and Herridge, J. T.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19800012718},
  note = {Source identifier: 19800012718}
}