1858 H. W. Herbert (1860) iv. 47 They are not generally speedy, even at ordinary road speed; still less often are they fleet, or what would be called fast.
1964 L. Deighton xxiv. 135 It's a good road... There was no need to burn up any road-speed records.
1977 E. Trevor vi. 83 The TR-2 had collided with another vehicle..at a much higher road speed.
2003 7 Apr. 14/1 (table) The Abrams Main Battle Tank has a quiet engine and a road speed of 45 mph.