TY - BOOK ID - 138835103 TI - Motorist information needs and visibility factors PY - 1984 SN - 0309038057 PB - Washington (D.C.): National research council. Transportation research board DB - UniCat KW - Traffic signs and signals UR - https://www.unicat.be/uniCat?func=search&query=sysid:138835103 AB - ER -