Bike Maryland puts forth the argument that a lock box on transportation funding will protect bike funding.
B' Spokes: No doubt transportation funds have been in trouble for a long time since current taxing methods do not keep up with inflation but still I will strongly assert bike funding is a matter of political will and not the amount of money available. Currently bike projects are roughly 0.1% of the funds available. It is not like bike projects are expensive and I strongly disagree with what the amendment really implies; that more major road projects will fix Maryland's "traveling by car is misery" issues. In my humble opinion MDOT just throws money at the problem with little effect on actually fixing anything and too often makes maters worse for cyclists and pedestrians.
Witness the upcoming election for Governor, the Republican side is going to postpone major mass transit projects under the assumption that the money would be better spent on car only projects. This is like our battle, if the political will says we have the money we have the money, if the political will says we don't have the money then we don't.