TY - SER ED - Transport and Road Research Laboratory. TI - TRRL laboratory report SN - 0305-1293 U1 - 625.76 PY - 1974///- CY - Crowthorne, Berkshire PB - Transport and Road Research Laboratory KW - MCE N1 - Technical report; Some issues of earlier title, TRRL report, have TRRL laboratory report on cover, 1973-1974; "Department of the Environment."; Latest issue consulted: 1050, published in 1982 ER -