design speed vs designed speed

Both 'design speed' and 'designed speed' are correct, but they are used in different contexts. 'Design speed' refers to the speed at which a road or highway is intended to be safely traveled, while 'designed speed' is the speed at which a vehicle or road is specifically engineered to operate. They are not interchangeable as they convey different meanings.

Last updated: March 26, 2024 • 878 views

This phrase is correct and commonly used in the context of road engineering to refer to the intended safe speed for a road or highway.

"design speed"

Use 'design speed' when referring to the speed at which a road or highway is intended to be safely traveled.

Examples:

The design speed of this highway is 70 miles per hour.
Engineers consider the design speed when planning road improvements.

Show examples from the web [+]

The mean contact force of each pantograph shall fulfil the requirements of the point 4.2.11 up to envisaged design speed of the OCL under test.
design speed not exceeding 30 km/h when the brakes act not on all wheels;
The load capacity may be adjusted in relation to the maximum design speed of the trailer in agreement with the tyre manufacturer.
I Tyres shall be type-approved according to the requirements of UNECE Regulation No. 54 even if the design speed of the vehicle is less than 80 km/h.
Whereas an appropriate increase in the design speed is from 30 to 40 km/h;
These measurements shall be carried out with an Interoperability Constituent pantograph installed on rolling stock exhibiting the mean contact force characteristics as required by clause 4.2.15 of this TSI for the envisaged design speed.
The unit shall be designed to provide safe movement up to the maximum design speed.
vehicles with a maximum design speed not exceeding 6 km/h;
Contact wire uplift at the design speed shall comply with the stipulations in Table 4.2.16.
The maximum design speed of the vehicle is measured in accordance with the requirements set out below.
Information document concerning the essential characteristics of the vehicle type that affect its maximum design speed
Calculated maximum design speed:... km/h
at the maximum design speed with the transmission in neutral,
Most passenger cars today have a maximum design speed in excess of 140 kilometres per hour (km/h).
300 km/h or the maximum design speed, whichever is lower
Electric units that require more than one pantograph raised in operation and of maximum design speed higher than 120 km/h shall be equipped with an ADD.
On vehicles with a maximum design speed not exceeding 30 km/h, the service braking system shall act on all the wheels of at least one axle.
Deviations from the prescribed test procedures are permitted in case that testing conditions cannot be complied with due to a too low maximum design speed of the tractor.
maximum design speed <= 25 km/h and
maximum design speed <= 45 km/h and

Alternatives:

intended speed
planned speed
projected speed
target speed
desired speed

This phrase is correct and commonly used in the context of vehicle or road engineering to refer to the speed at which a vehicle or road is specifically engineered to operate.

"designed speed"

Use 'designed speed' when referring to the speed at which a vehicle or road is specifically engineered to operate.

Examples:

The designed speed of this car is 120 miles per hour.
The road was built with a designed speed of 60 miles per hour.

Show examples from the web [+]

This amendment is designed to speed up the committee's consultation procedure.
The investment is designed to speed up the cleaning of steel plates.
For example, rolling stock designed for speeds >250 km/h shall still be stable when running on lines designed for speeds of the order of 200 km/h or less.
MEPs approved a recommendation for second reading on the European Payment Order, a procedure designed to speed up the settlement of cross-border payment claims.
(ii) maximum designed vehicle speed:
Designed for speed and combat acrobatics, it features the latest Mrs Halver series 3800 radar-jamming Framus.
Even the shape of the body is computer-designed with speed in mind.
First determine the scope and then we shall welcome the SESAR which, in all events, is designed to speed up passenger movements.
The new Commission proposal is designed to speed up procedures but, at the same time, ensure a high standard of patient safety - dubbed "pharmacovigilance".
Rolling stock designed for higher speeds shall still be stable when running on lines designed for lower speeds.
Built for precision, speed designed to handle flawlessly under any conditions.
This clause 4.2.3.4.2 is applicable to units designed for a speed higher than 60 km/h.
high-speed lines designed for speeds of 250 km/h and above, and
While maximum designed vehicle speed is relevant for emission testing it is not for classifying a vehicle type.
According to the TSI Energy, the range of mean contact force Fm is not harmonised for overhead contact lines designed for speed higher than 320 km/h.
wind tunnels designed for speeds of Mach 1,2 or more.
7 mm/m for lines designed for speed <= 200 km/h
They were using my system, and I designed it for speed over accuracy.
On these lines, the performance levels of the interoperable trainsets specially designed for high-speed cannot be exploited fully.
The European Parliament decided to support the creation of a European payment order (EPO), a new procedure designed to speed up resolution of cross-border payment claims.

Alternatives:

engineered speed
specified speed
calculated speed
planned speed
target speed

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design speed vs designed speed

"design speed"

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