@inbook{khattak_rouphail_monast_havel_2004, title={Method for priority-ranking and expanding freeway service patrols}, ISBN={0309094615}, number={1867}, booktitle={Freeway operations and traffic signal systems, 2004}, publisher={Washington, DC: Transportation Research Board, National Academy of Sciences}, author={Khattak, A. and Rouphail, N. and Monast, K. and Havel, J.}, year={2004}, pages={1–10} }
 @article{karimi_khattak_hummer_2000, title={Evaluation of mobile mapping systems for roadway data collection}, volume={14}, DOI={10.1061/(ASCE)0887-3801(2000)14:3(168)}, number={3}, journal={Journal of Computing in Civil Engineering}, author={Karimi, H. A. and Khattak, A. J. and Hummer, J. E.}, year={2000}, pages={168–173} }
 @inbook{krull_khattak_council_2000, title={Injury effects of rollovers and events sequence in single-vehicle crashes}, ISBN={0309066999}, number={1717}, booktitle={Highway and traffic safety: crash data, analysis tools, and statistical methods: Safety and human performance}, publisher={Washington, DC: National Academy Press}, author={Krull, K. A. and Khattak, A. J. and Council, F. M.}, year={2000}, pages={46–54} }
 @article{dai_karimi_khorram_khattak_hummer_1999, title={Roadway feature extraction and delineation fron high-resolution satellite imagery}, number={1999 May}, journal={EOM}, author={Dai, X. L. and Karimi, H. A. and Khorram, S. and Khattak, A. J. and Hummer, J. E.}, year={1999}, pages={34–37} }
 @article{karimi_dai_khattak_khorram_hummer_1999, title={Techniques for automated extraction of roadway inventory features from high-resolution satellite imagery}, volume={14}, DOI={10.1080/10106049908542099}, number={2}, journal={Geocarto International}, author={Karimi, H. A. and Dai, X. L. and Khattak, A. J. and Khorram, S. and Hummer, J. E.}, year={1999}, pages={5–16} }
 @inproceedings{accidents on secondary highways and counter-measures: phase i, final report_1998, publisher={Raleigh, NC: Southeastern Transportation Center Consortium}, year={1998} }
 @inproceedings{hummer_khattak_1998, title={Analysis of major types of collisions on two-lane rural highways in North Carolina}, number={1998}, booktitle={1998 Compendium of technical papers, Institute of Transportation Engineers, 68th annual meeting, Toronto, Ontario, August 12}, author={Hummer, J. E. and Khattak, A. J.}, year={1998} }
 @inproceedings{khattak_hummer_1998, title={Analysis of run off the road collisions on two lane rural highways in North Carolina, USA}, number={1998 Aug.}, booktitle={1998 compendium of technical papers, Institute of Transportation Engineers, 68th Annual Meeting, Toronto, Ontario, August 1998}, author={Khattak, A. J. and Hummer, J. E.}, year={1998} }
 @inbook{khattak_1998, title={Comparative analysis of spatial knowledge and en route diversion behavior in Chicago and San Francisco: Implications for advanced traveler information systems}, ISBN={030906466X}, number={1621}, booktitle={Intelligent transportation systems
advanced traveler information systems and safety research. Washington, D.C.: National Academy Press, 1998. (Transportation research record ; 1621)}, publisher={Washington, DC: Transportation Research Board}, author={Khattak, A. J.}, year={1998}, pages={27–35} }
 @article{khattak_karimi_dai_hummer_1998, title={High-resolution satellite imagery aids roadway data collection}, number={1998 Nov.}, journal={Public Works}, author={Khattak, A. J. and Karimi, H. A. and Dai, X. L. and Hummer, J. E.}, year={1998}, pages={28–30} }
 @article{karimi_dai_khatak_hummer_1998, title={The emergence of high-resolution satellite digital imagery for acquisition roadway inventory features}, volume={3}, number={1}, journal={Space Energy and Transportation}, author={Karimi, H. A. and Dai, X. L. and Khatak, A. J. and Hummer, J. E.}, year={1998}, pages={19–26} }
 @inproceedings{hummer_khattak_kantor_1997, title={Collision factors and potential counter measures related to heavy trucks on two-lane roads}, number={1997}, booktitle={Proceedings, 1997 International Large Truck Safety Symposium, Knoxville, TN, October 27-29}, author={Hummer, J. E. and Khattak, A. and Kantor, P.}, year={1997}, pages={81–91} }