We have completed a survey of Southern California residents designed to exa
mine whether the details of policy design can make congestion pricing more
attractive to the motoring public. A congestion fee proposal is often regar
ded as simply a tax increase; also, especially in the US, motorists apparen
tly regard the use of congestion fees as coercive, in that they often have
few if any practical alternatives to paying the fee. Unlike most opinion su
rveys on congestion pricing, our survey was quite explicit about the fate o
f the collected revenues. For example, we presented respondents with polici
es that returned a substantial portion of the revenues to the public, eithe
r in the form of cash (through reductions in sales taxes and vehicle regist
ration fees or through income tax credits) or in the form of coupons to be
used for vehicle emissions equipment repair, transit, and the like. In addi
tion, we examined whether the typically intense opposition to congestion pr
icing if applied only to a part of a roadway, leaving the motorist free to
choose between free lanes and toll lanes. We iind that a promise to offset
the imposition of congestion fees by other taxes can result in a 7% point i
ncrease in support for congestion pricing policies, and the restriction of
congestion pricing to a single lane on a freeway attracts from 9% to 17% po
ints of additional support. (C) 2000 Elsevier Science Ltd. All rights reser
ved.