TfL actually received ~£3b in subsidies in 2018. That's compared to total gross income from the LU of £2,799m.
> The total of resource and capital grants receivable by TfL in 2018/19 amounted to £3,016m (2017/18 £2,477m). [1]
Total expenditure on roads of £539m, minus Congestion charges of £230m, means that subsidies received by TfL (covered by fuel duty & VED revenues) exceeded TfL road maintenance costs by £2,707m.
The LU does not subsidize the roads. It's actually the other way around. The net-subsidy (a.k.a government's net loss) on the LU is calculated at 9.7p per person-km, compared to a net-taxation (a.k.a government's net income) of 3.8p per person-km for driving.
> The total of resource and capital grants receivable by TfL in 2018/19 amounted to £3,016m (2017/18 £2,477m). [1]
Total expenditure on roads of £539m, minus Congestion charges of £230m, means that subsidies received by TfL (covered by fuel duty & VED revenues) exceeded TfL road maintenance costs by £2,707m.
The LU does not subsidize the roads. It's actually the other way around. The net-subsidy (a.k.a government's net loss) on the LU is calculated at 9.7p per person-km, compared to a net-taxation (a.k.a government's net income) of 3.8p per person-km for driving.
[1] - http://content.tfl.gov.uk/tfl-annual-report-and-statement-of... (See Page 126)