Apedestrian crossing sign is an example of a regulatory sign. a. true b. false

False  

Explanation: It is an example of a warning sign.

Regulatory traffic signs are white with black or red letters inculcating road users what they must or must not do these signs fall under the road and traffic rules. Some examples of Regulatory signs are:

Stop sign

Yield sign

Do not enter sign

Wrong way sign  

Speed limit sign  

Keep left / keep right sign

One-way sign  

Whilst warning signs indicate potential hazards/obstacles and conditions.

For example:

School children crossing sign

Pedestrian Crossing Sign

Bicycle Crossing Sign  

Lane Merge Sign  

Signal Ahead Sign

Curve Sign  

the answer will be A.Research cannot use both qualitative and quantitative methods in a study.