共 6 条
- [1] CAMPBELL ME, 1971, TRAFFIC QUART, V25, P209
- [2] CODLING PJ, 1974, WEATHER ROAD ACCIDEN, P205
- [3] ORNE DE, 1972, TRAFFIC ENG, V43, P14
- [4] ROER P, 1974, LOG T RES, V10, P165
- [5] TANNER JC, 1967, LR74 MIN TRANSP ROAD
- [6] 1971, CALIFORNIA STATISTIC